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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Out of stock0.96 Inch Blue SPI OLED Display Module 7-Pin 128×64 – SSD1306
[LED/LCD Display] 0.96 Inch Blue SPI OLED Display Module 7-Pin 128×64 – SSD1306 The 0.96-inch Blue OLED Display Module is a compact graphical display based on the SSD1306 driver IC, featuring a 128×64 pixel resolution and blue monochrome display. This version has a 7-pin interface with a dedicated CS (Chip Select) pin, making it suitable for 4-wire SPI communication. The module is factory-configured for SPI and can also be modified for I2C/IIC communication on compatible board versions. With its compact size, wide viewing angle and low-power OLED technology, it is suitable for Arduino, ESP32, ESP8266, STM32, Raspberry Pi and other microcontroller projects. ⭐ Key Features 0.96-inch blue OLED display 128 × 64 pixel resolution SSD1306 driver IC 7-pin interface Dedicated CS (Chip Select) pin Factory configured for 4-wire SPI Supports SPI and I2C/IIC with appropriate configuration 3.3V/5V compatible on supported module versions No backlight required Low power consumption Wide viewing angle of more than 160° Compact PCB design Pre-soldered 7-pin male header Compatible with Arduino, ESP32, ESP8266, STM32 and Raspberry Pi projects 📋 Technical Specifications Display Type: OLED (Organic Light-Emitting Diode) Display Colour: Blue Display Size: 0.96 inch Driver IC: SSD1306 Resolution: 128 × 64 pixels Interface: SPI / I2C Default Interface: 4-wire SPI Input Voltage: 3.3V–5V Viewing Angle: >160° Module Dimensions: Approximately 27 × 27 × 4mm Operating Temperature: Approximately -30°C to +70°C Header: 7-pin male header, pre-soldered Display Type: Monochrome blue OLED 🔌 7-Pin Interface The 7-pin version provides the following connections: GND – Ground VCC – Power supply D0 / SCK / CLK – SPI clock D1 / MOSI / SDA – SPI data RES / RST – Display reset DC / A0 – Data/Command selection CS – Chip Select 🛠️ SPI Connection The module is normally supplied in 4-wire SPI configuration. For an Arduino Uno, a typical connection is: VCC → 5V GND → GND D0 → SCK / D13 D1 → MOSI / D11 RES → Digital I/O DC → Digital I/O CS → Digital I/O The dedicated CS pin allows the OLED to share the SPI bus with other devices such as SD cards or additional SPI peripherals. 🔄 I2C / IIC Configuration On compatible versions, the module can be converted from SPI to I2C by changing the appropriate resistor configuration on the PCB. The supplied board configuration may require: Moving the resistor from R3 to R1 Shorting R8 with solder Using D0 as SCL Using D1 as SDA Configuring DC for the I2C address The exact resistor positions can vary between board revisions, so check the markings on your particular PCB before modification. 🎯 Applications Arduino projects ESP32 projects ESP8266 projects STM32 development Raspberry Pi projects IoT devices Sensor displays Voltage/current meters Battery monitors Temperature displays Digital clocks Data loggers Portable electronic devices Robotics DIY measuring instruments Embedded systems Menu and status displays 💡 Advantages of OLED OLED technology is self-emissive, meaning the pixels produce their own light and do not require a conventional backlight. This provides high contrast, compact construction and a wide viewing angle while keeping power consumption relatively low. ⚠️ Important Notes This is the 7-pin SPI version, not the 6-pin version. The module is normally configured for SPI communication. Check the PCB labels before connecting the module. Do not exceed the specified supply voltage. Although many versions support 5V operation, the exact voltage tolerance can vary between board revisions. I2C operation may require hardware resistor modification. The actual PCB layout and component markings may vary slightly between production batches. Display colour: Blue. Libraries such as Adafruit SSD1306 and U8g2 can be used with compatible microcontrollers. 📦 Package Includes 1 × 0.96 Inch Blue SPI OLED Display Module
26650 Battery Holder / Battery Spacer 2×1 – 26.3mm Bore Diameter
[Lithium Battery Holder] 26650 Battery Holder / Battery Spacer 2×1 – 26.3mm Bore Diameter The 26650 Battery Holder / Battery Spacer 2×1 is a cylindrical battery spacer designed to securely arrange 26650 lithium-ion battery cells while building multi-cell battery packs. Made from flame-retardant ABS+PC material, it provides a strong and stable structure while allowing air circulation around the cells. The holder features interlocking slots on the edges, allowing multiple spacers to be joined together to create different battery-pack sizes and configurations. After welding nickel strips, the assembled battery pack can achieve a solid and reliable structure without requiring additional connecting hardware. ⭐ Key Features Designed for 26650 cylindrical lithium-ion cells 2 × 1 configuration 26.3mm bore diameter Made from flame-retardant ABS+PC material High-temperature resistant construction Crack-resistant design Interlocking slots for connecting multiple spacers Allows flexible battery-pack configurations Provides mechanical support for battery cells Helps maintain proper spacing between cells Suitable for high-current battery-pack construction Helps improve battery-pack stability and reliability Allows airflow around the cells for heat dissipation 📋 Technical Specifications Product Type: Battery Holder / Battery Spacer Compatible Cell: 26650 cylindrical battery Configuration: 2 × 1 Number of Cells: 2 Bore Diameter: 26.3mm Material: Flame-retardant ABS+PC Construction: Interlocking modular design Mounting: Multiple spacers can be joined together Application: Lithium battery pack assembly Cell Type: Cylindrical Li-ion cells 🔧 Applications 26650 lithium-ion battery packs E-bike battery packs Electric scooter battery packs Electric vehicle battery packs Power-tool battery packs DIY high-current battery packs UPS battery systems Solar energy storage packs Portable power stations Robotics battery packs Custom lithium battery assemblies 🛠️ How to Use The spacer is designed to hold two 26650 cells in a 2×1 arrangement. Multiple spacers can be connected through the slots provided around the edges to create larger battery-pack configurations. For a complete battery pack: Cell → Spacer → Nickel Strip Welding → Additional Spacers → Battery Pack For mechanical support, spacers can be positioned at the top and bottom of the cells. Important: For each individual battery cell, 2 spacers are recommended—one at the top and one at the bottom. 💡 Advantages Simple Assembly: Easy to arrange cylindrical cells. Flexible Design: Multiple spacers can be interconnected to create different pack shapes. Strong Construction: Helps keep cells firmly positioned. Heat Dissipation: Provides spacing between cells and allows airflow. Reliable Battery Pack: Helps make the completed pack mechanically stable. Suitable for Complex Packs: Useful for custom battery configurations, including e-bike and high-current applications. ⚠️ Important Notes This product is only a battery holder/spacer; batteries are not included. The 26.3mm bore is intended for compatible 26650 cells. Check your actual cell diameter before purchase. Do not force oversized cells into the holder. Battery cells should be properly insulated and securely assembled. Use suitable nickel strip and an appropriate spot-welding method. Use a suitable BMS/protection system for the completed lithium battery pack. Battery cells should be properly matched before assembling a multi-cell pack. 2 spacers are recommended per individual cell, one on each end. Keep the battery assembly away from excessive heat, moisture and physical damage. 📦 Package Includes 1 × 26650 Battery Holder / Battery Spacer – 2×1, 26.3mm Bore Diameter Note: Battery cells, nickel strips and BMS are not included.
Black Plastic 3×18650 Battery Holder or Case Series Connection With Wire
[Lithium Battery Holder] Black Plastic 3×18650 Battery Holder – Series Connection The Black Plastic 3×18650 Battery Holder is designed to securely hold three 18650 lithium-ion battery cells in series configuration. It provides a convenient and organized way to mount 18650 cells for DIY battery packs, portable electronics, power supplies, LED projects, and other battery-powered applications. The holder is made from durable plastic and features mounting holes for secure installation using suitable screws. It is supplied with red and black connecting wires for convenient connection to an external circuit. ⭐ Key Features Designed for 3 × 18650 battery cells Series connection Black plastic construction Without cover Secure battery positioning Easy installation Built-in mounting holes Red and black connecting wires Suitable for DIY battery pack projects Compact and lightweight design 📋 Technical Specifications Product Type: 18650 Battery Holder Battery Capacity: 3 Cells Battery Type: 18650 Li-Ion Cell Configuration: 3S / Series Connection Nominal Output Voltage: Approximately 11.1V with 3.7V cells Fully Charged Voltage: Approximately 12.6V Material: Plastic Color: Black Cover: Without Cover Connection Wires: Red and Black Mounting: Screw Mount Mounting Holes: Yes Recommended Screw Size: Approximately 3mm Application: Battery Pack / Portable Electronics 🔌 Connection The three 18650 cells are connected in series, increasing the total voltage while maintaining the capacity of a single cell. With standard 3.7V nominal cells, the pack is approximately 11.1V nominal and 12.6V when fully charged. The red wire is the positive connection and the black wire is the negative connection. 🔧 Applications DIY 18650 Battery Packs 3S Lithium-Ion Battery Packs Portable Electronics LED Lighting Projects DIY UPS Projects Arduino Projects ESP8266 / ESP32 Projects Rechargeable Electronics Battery-Powered Devices Electronics Prototyping 📦 Package Includes 1 × 3×18650 Battery Holder / Case – Series Connection, Without Cover ⚠️ Precautions Use only compatible 18650 Li-Ion cells. Use three cells with matching capacity, chemistry, age, and charge condition. Use a suitable 3S BMS/protection and charging circuit. Do not mix damaged or mismatched cells. Check polarity carefully before installation. Do not short-circuit the battery terminals. Do not use damaged, swollen, or leaking cells. Ensure the holder and wiring are securely installed.
1K Ohm Rotary Potentiometer Round Shaft 3 Pin Elcon
[Potentiometer] 1KΩ Rotary Potentiometer Round Shaft Elcon The 1KΩ Rotary Potentiometer Round Shaft Elcon is a reliable 3-pin linear rotary potentiometer designed for adjusting electrical parameters such as voltage, current, brightness, motor speed, and other control functions in electronic circuits. By rotating the shaft, the resistance can be smoothly adjusted across its available range, making it suitable for a wide variety of DIY and electronic applications. With its compact 16mm body, 6mm round shaft, and through-hole mounting design, this potentiometer is easy to install on electronic PCBs and control panels. Its linear resistance characteristics make it suitable for applications such as LED brightness control, fan speed control, motor control, power supply adjustment, and general-purpose voltage control. ⭐ Key Features 1KΩ resistance value 3-pin rotary potentiometer Linear potentiometer Smooth rotary adjustment 6mm round shaft 10mm shaft length Compact 16mm body diameter Through-hole mounting Suitable for PCB and electronic circuits Ideal for voltage and resistance adjustment Suitable for DIY and electronic projects Elcon brand 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Resistance Value: 1KΩ Configuration: 3 Pin / Single Gang Tolerance: ±20% Shaft Type: Round Shaft Shaft Diameter: 6mm Shaft Length: 10mm Body Diameter / Width: 16mm Total Height: Approx. 25mm Mounting Type: Through Hole Operating Temperature: -40°C to +80°C Weight: Approx. 8g 🔧 Applications LED Brightness Control Fan Speed Control Motor Speed Control Voltage Adjustment Current Adjustment Power Supply Circuits Audio & Electronic Circuits Arduino Projects DIY Electronics Projects Electronic Prototyping 🛠️ How It Works A potentiometer is a variable resistor with three terminals. The two outer terminals are connected to the resistive track, while the center terminal acts as the wiper. Rotating the shaft changes the wiper position and therefore changes the resistance or output voltage in the circuit. 📦 Package Includes 1 × 1KΩ Rotary Potentiometer Round Shaft Elcon ⚠️ Note Product images are shown for illustrative purposes only and may differ slightly from the actual product. The 1KΩ value, tolerance, dimensions, and shaft length should be verified against the actual product batch before installation.
5K Ohms Rotary Potentiometer Round Shaft 3 Pin Elcon
[Potentiometer] 5KΩ Rotary Potentiometer Round Shaft Elcon The 5KΩ Rotary Potentiometer Round Shaft Elcon is a reliable 3-pin linear rotary potentiometer designed for adjusting electrical parameters such as voltage, current, brightness, motor speed, and other control functions in electronic circuits. By rotating the shaft, the resistance can be smoothly adjusted across its available range, making it suitable for a wide variety of DIY and electronic applications. With its compact 16mm body, 6mm round shaft, and through-hole mounting design, this potentiometer is easy to install on electronic PCBs and control panels. Its linear resistance characteristics make it suitable for applications such as LED brightness control, fan speed control, motor control, power supply adjustment, and general-purpose voltage control. ⭐ Key Features 5KΩ resistance value 3-pin rotary potentiometer Linear potentiometer Smooth rotary adjustment 6mm round shaft 13mm shaft length Compact 16mm body diameter Through-hole mounting Suitable for PCB and electronic circuits Ideal for voltage and resistance adjustment Suitable for DIY and electronic projects Elcon brand 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Resistance Value: 5KΩ Configuration: 3 Pin / Single Gang Tolerance: ±20% Shaft Type: Round Shaft Shaft Diameter: 6mm Shaft Length: 13mm Body Diameter / Width: 16mm Total Height: Approx. 28mm Mounting Type: Through Hole Operating Temperature: -40°C to +80°C Weight: Approx. 8g 🔧 Applications LED Brightness Control Fan Speed Control Motor Speed Control Voltage Adjustment Current Adjustment Power Supply Circuits Audio & Electronic Circuits Arduino Projects DIY Electronics Projects Electronic Prototyping 🛠️ How It Works A potentiometer is a variable resistor with three terminals. The two outer terminals are connected to the resistive track, while the center terminal acts as the wiper. Rotating the shaft changes the wiper position and therefore changes the resistance or output voltage in the circuit. 📦 Package Includes 1 × 5KΩ Rotary Potentiometer Round Shaft Elcon ⚠️ Note Product images are shown for illustrative purposes only and may differ slightly from the actual product. The 5KΩ value, tolerance, dimensions, and shaft length should be verified against the actual product batch
Black Latching Mini ON/Off Switch Self-Lock Micro Push Button Switch DC 30V 1A for Light Lamp Wall Outlet DIY SMD Flashlight
[Mechanical Switches] The Black Oval Self-Lock Tactile Switch is a compact and durable push button switch designed for low-voltage electronic control applications. It features a self-locking ON/OFF mechanism, allowing the switch to remain in position until pressed again. In addition, the switch uses an SPST (Single Pole Single Throw) configuration for simple and reliable switching operation. As a result, it is suitable for portable electronic devices, LED lighting systems, flashlights, and DIY electronics projects. Because of its compact oval-shaped design, the switch fits easily into small electronic enclosures and space-limited devices. Furthermore, the durable internal mechanism ensures stable operation and long service life. The switch is rated for 1A at 30V DC, making it ideal for battery-powered circuits and low-power applications. Moreover, the tactile push operation provides smooth switching feedback during use. This self-lock tactile switch is commonly used in flashlights, portable devices, DIY electronics, LED control systems, and electronic repair projects. 🔹 Key Features Oval-shaped self-lock tactile switch SPST switching configuration Push ON / Push OFF operation Compact and lightweight design Durable and long-lasting construction Smooth tactile switching response Suitable for low-voltage DC applications Easy installation for DIY projects 🔹 Technical Specifications Product Type: Self-Lock Tactile Switch Switch Shape: Oval Operation Type: Self-Locking Switching Mode: Push ON / Push OFF Contact Configuration: SPST Rated Voltage: 30V DC Rated Current: 1A Switch Dimensions: 12mm × 8mm Plate Length: 8mm Insulation Resistance: 100MΩ Operating Force: 2.55 ± 0.69N Body Material: Plastic + Metal Button Color: Black 🔹 Applications This tactile push switch is suitable for many electronic applications, including: LED flashlights DIY electronics projects Portable electronic devices LED lighting systems Small control circuits Electronic repair projects Battery-powered devices Low-voltage switching systems 🔹 Package Includes 1 × Black Oval Self-Lock Tactile Push Button Switch
6A 250V Black SPDT 3 Pin Mini Rocker Switch ON/OFF 2 Position Switch
[Mechanical Switches] The Black SPDT Mini Rocker Switch is a compact and reliable ON/OFF switch designed for electrical and electronic control applications. It features a Single Pole Double Throw (SPDT) configuration with two operating positions for smooth switching control. In addition, the rocker button includes clearly marked “I” and “O” symbols, allowing users to quickly identify the ON and OFF positions during operation. As a result, it provides convenient and user-friendly switching for various electronic projects and appliances. Because of its compact size and durable black plastic body, the switch is suitable for installation in small electronic enclosures and control panels. Furthermore, the sleek black finish gives a professional appearance for industrial and consumer applications. The rocker switch is rated for 6A at 250V AC and 10A at 125V AC, ensuring stable and reliable switching performance. Moreover, the snap-in mounting design allows fast and secure installation without additional screws or hardware. This mini rocker switch is widely used in power supplies, appliances, DIY electronics, industrial equipment, automation systems, and electrical control panels. 🔹 Key Features SPDT rocker switch design ON/OFF two-position operation Clear “I” and “O” markings Durable black body construction High current switching capacity Compact and lightweight design Easy snap-in installation Suitable for AC power control 🔹 Technical Specifications Switch Type: Mini Rocker Switch Contact Configuration: SPDT (Single Pole Double Throw) Positions: ON / OFF Rated Voltage: 250V AC / 125V AC Rated Current: 6A @ 250V AC Rated Current: 10A @ 125V AC Body Color: Black Mounting Type: Panel Mount / Snap-In Body Material: Plastic Contact Material: Iron Terminal Type: Pin Terminal Button Marking: I / O 🔹 Applications This rocker switch is suitable for many electronic and electrical applications, including: DIY electronics projects Power supplies Industrial equipment Automation systems Home appliances Control panels Electrical devices 🔹 Package Includes 1 × Black SPDT Mini Rocker Switch
6A 250V SPDT 3 Pin Mini Rocker Switch ON/OFF Red 2 Position Switch
[Mechanical Switches] The SPDT Mini Rocker Switch is a compact and reliable ON/OFF switch designed for electrical and electronic control applications. It features a Single Pole Double Throw (SPDT) configuration with two operating positions for easy switching control. In addition, the rocker button includes clearly marked “I” and “O” symbols, allowing users to quickly identify the ON and OFF positions during operation. As a result, it is convenient and user-friendly for both professional and DIY applications. Because of its compact size and durable body construction, the switch is suitable for installation in small electronic enclosures and control panels. Furthermore, the switch supports high current handling capability, making it ideal for AC power switching applications. The rocker switch is rated for 6A at 250V AC and 10A at 125V AC, ensuring stable and reliable switching performance. Moreover, the snap-in mounting design allows quick and secure installation without additional hardware. This mini rocker switch is widely used in power supplies, appliances, DIY electronics, industrial equipment, automation systems, and electrical control panels. 🔹 Key Features SPDT rocker switch design ON/OFF two-position operation Clear “I” and “O” markings Compact and lightweight body High current switching capacity Durable and reliable operation Easy snap-in installation Suitable for AC power control 🔹 Technical Specifications Switch Type: Mini Rocker Switch Contact Configuration: SPDT (Single Pole Double Throw) Positions: ON / OFF Rated Voltage: 250V AC / 125V AC Rated Current: 6A @ 250V AC Rated Current: 10A @ 125V AC Mounting Type: Panel Mount / Snap-In Body Material: Plastic Contact Material: Iron Color :Black and Red Terminal Type: Pin Terminal Button Marking: I / O 🔹 Applications This rocker switch is suitable for many electronic and electrical applications, including: DIY electronics projects Power supplies Industrial equipment Automation systems Home appliances Control panels Electrical devices 🔹 Package Includes 1 × SPDT Mini Rocker Switch
5 Pin Mini SPDT Relay 12V 10A 250V PCB Mount Electromagnetic Relay
[Relay Module, Relays] 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 10A The 12V PCB Mount Sugar Cube SPDT Relay is a compact Single Pole Double Throw (SPDT) electromagnetic relay designed for switching AC and DC electrical loads using a microcontroller, sensor, automation circuit, or other low-power control system. Its compact PCB-mount design makes it suitable for DIY electronics, home automation, security systems, switching circuits, motor control, lighting control, and embedded applications. The relay features a 12V DC coil and a 5-pin SPDT configuration consisting of two coil terminals, COM (Common), NO (Normally Open), and NC (Normally Closed) contacts. When the coil is energized, the internal contact switches between the NC and NO terminals. With contact ratings of up to 10A at 250V AC, 10A at 125V AC, 12A at 120V DC, and 10A at 28V DC, this relay is suitable for a wide range of electrical switching applications. ⭐ Key Features SPDT (Single Pole Double Throw) relay 12V DC coil Compact Sugar Cube design 5-pin configuration PCB mounting type 10A @ 250V AC contact rating 10A @ 125V AC contact rating 12A @ 120V DC contact rating 10A @ 28V DC contact rating Coil resistance: approximately 270Ω Approximately 45mA nominal coil current 50/60Hz frequency specification Fast switching response Suitable for microcontroller and sensor-controlled switching Ideal for automation and control applications 📋 Technical Specifications Product Type: PCB Mount Relay Relay Type: SPDT (Single Pole Double Throw) Contact Configuration: 1 Form C Number of Pins: 5 Coil Voltage: 12V DC Trigger Voltage: 12V DC Coil Resistance: 270Ω Nominal Coil Current: Approximately 45mA Frequency: 50/60Hz Maximum AC Load: 10A @ 250V AC Maximum AC Load: 10A @ 125V AC Maximum DC Load: 12A @ 120V DC Maximum DC Load: 10A @ 28V DC Operating Time: 10ms Release Time: 5ms Mounting Type: PCB Mount Contact Terminals: COM / NO / NC Coil Terminals: Coil End 1 / Coil End 2 🔌 Pin Configuration Coil End 1: One terminal of the 12V DC relay coil Coil End 2: Other terminal of the 12V DC relay coil COM: Common switching contact NO: Normally Open contact NC: Normally Closed contact When the relay coil is not energized, COM is connected to NC. When the 12V DC coil is energized, COM switches from NC to NO. 🛠️ How It Works The relay uses an electromagnetic coil to mechanically switch an electrical circuit. Applying 12V DC to the coil energizes the relay and changes the contact position. A load connected between COM and NC remains connected when the relay is inactive. A load connected between COM and NO remains disconnected until the relay coil is energized. This allows a low-power control circuit such as an Arduino, microcontroller, sensor, timer, or automation controller to control a higher-current AC or DC load. 🔧 Applications Arduino Projects Microcontroller Projects Sensor-Controlled Switching Home Automation Security Systems Lighting Control Fan Control Motor Control Pump Control Power Supply Switching Industrial Control Systems Embedded Electronics DIY Electronics Projects 📦 Package Includes 1 × 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 10A ⚠️ Precautions Use a suitable 12V DC supply for the relay coil. Do not exceed the specified contact voltage and current ratings. Check the COM, NO, NC, and coil terminals before wiring. Use suitable flyback protection when driving the relay coil from sensitive electronic circuits. Use appropriate suppression/protection components for inductive loads such as motors, solenoids, and coils. Provide sufficient PCB insulation and clearance when switching mains voltage. Disconnect power before changing or modifying wiring. Do not touch exposed mains-voltage terminals during operation.
3A 250V Black Push Button ON/OFF Lock Switch Self Locking Push Switch
[Mechanical Switches] The 3A 250V Black Push Button ON/OFF Lock Switch is a compact and reliable self-locking push-type switch designed for permanent ON/OFF control applications. Unlike momentary switches, this switch remains locked in position after pressing until pressed again. In addition, the switch uses a stable locking mechanism that allows smooth operation and reliable switching performance. As a result, it is suitable for power control, equipment activation, and automation applications. Because of its compact size and durable plastic construction, the switch is ideal for many electronic and industrial projects. Furthermore, the black button provides a clean professional appearance that matches modern control panels and electronic enclosures. The switch supports loads up to 3A at 250VAC, making it suitable for both AC and low-voltage DC control circuits. Moreover, the panel-mount structure enables quick and secure installation into control panels and electronic devices. This ON/OFF lock switch is widely used in DIY electronics, industrial automation, robotics systems, power supplies, alarm systems, and electrical control circuits. 🔹 Key Features Self-locking ON/OFF push button switch Stable locking mechanism Compact and lightweight body Professional black push button cap Easy panel mounting installation Durable plastic construction Stable and reliable switching operation Suitable for AC and DC applications 🔹 Technical Specifications Switch Type: Push Button ON/OFF Lock Switch Contact Type: Self Locking Operation Type: Push ON / Push OFF Rated Voltage: 250V AC Rated Current: 3A Button Color: Black Mounting Type: Panel Mount Mounting Hole Diameter: Approx. 12mm Button Diameter: Approx. 12mm Total Length: Approx. 28mm Body Material: Plastic Contact Material: Silver-Plated Metal Terminal Type: 2 Pin Solder/Quick Connect Operating Temperature: -25°C to +85°C 🔹 Applications This push button lock switch is suitable for many electronic and electrical applications, including: DIY electronics projects Industrial control panels Automation systems Robotics projects Power control circuits Alarm systems Electronic devices Small appliances 🔹 Package Includes 1 × 3A 250V Black Push Button ON/OFF Lock Switch
3A 250V Blue Push Button ON/OFF Lock Switch Self Locking Push Switch
[Mechanical Switches] The 3A 250V Blue Push Button ON/OFF Lock Switch is a compact and reliable self-locking push-type switch designed for permanent ON/OFF control applications. Unlike momentary switches, this switch remains locked in position after pressing until pressed again. In addition, the switch uses a stable locking mechanism that allows easy operation and reliable switching performance. As a result, it is suitable for power control, equipment activation, and automation applications. Because of its compact size and durable plastic construction, the switch is ideal for many electronic and industrial projects. Furthermore, the bright blue button improves visibility and allows quick identification during operation. The switch supports loads up to 3A at 250VAC, making it suitable for both AC and low-voltage DC control circuits. Moreover, the panel-mount structure enables quick and secure installation into control panels and electronic enclosures. This ON/OFF lock switch is widely used in DIY electronics, industrial automation, robotics systems, power supplies, alarm systems, and electrical control circuits. 🔹 Key Features Self-locking ON/OFF push button switch Stable locking mechanism Compact and lightweight body Bright blue push button cap Easy panel mounting installation Durable plastic construction Stable and reliable switching operation Suitable for AC and DC applications 🔹 Technical Specifications Switch Type: Push Button ON/OFF Lock Switch Contact Type: Self Locking Operation Type: Push ON / Push OFF Rated Voltage: 250V AC Rated Current: 3A Button Color: Blue Mounting Type: Panel Mount Mounting Hole Diameter: Approx. 12mm Button Diameter: Approx. 12mm Total Length: Approx. 28mm Body Material: Plastic Contact Material: Silver-Plated Metal Terminal Type: 2 Pin Solder/Quick Connect Operating Temperature: -25°C to +85°C 🔹 Applications This push button lock switch is suitable for many electronic and electrical applications, including: DIY electronics projects Industrial control panels Automation systems Robotics projects Power control circuits Alarm systems Electronic devices Small appliances 🔹 Package Includes 1 × 3A 250V Blue Push Button ON/OFF Lock Switch
3A 250V Yellow Push Button ON/OFF Lock Switch Self Locking Push Switch
[Mechanical Switches] The 3A 250V Yellow Push Button ON/OFF Lock Switch is a compact and reliable self-locking push-type switch designed for permanent ON/OFF control applications. Unlike momentary switches, this switch remains locked in position after pressing until pressed again. In addition, the switch uses a stable locking mechanism that allows easy operation and reliable switching performance. As a result, it is suitable for power control, equipment activation, and automation applications. Because of its compact size and durable plastic construction, the switch is ideal for many electronic and industrial projects. Furthermore, the bright yellow button improves visibility and allows quick identification during operation. The switch supports loads up to 3A at 250VAC, making it suitable for both AC and low-voltage DC control circuits. Moreover, the panel-mount structure enables quick and secure installation into control panels and electronic enclosures. This ON/OFF lock switch is widely used in DIY electronics, industrial automation, robotics systems, power supplies, alarm systems, and electrical control circuits. 🔹 Key Features Self-locking ON/OFF push button switch Stable locking mechanism Compact and lightweight body Bright yellow push button cap Easy panel mounting installation Durable plastic construction Stable and reliable switching operation Suitable for AC and DC applications 🔹 Technical Specifications Switch Type: Push Button ON/OFF Lock Switch Contact Type: Self Locking Operation Type: Push ON / Push OFF Rated Voltage: 250V AC Rated Current: 3A Button Color: Yellow Mounting Type: Panel Mount Mounting Hole Diameter: Approx. 12mm Button Diameter: Approx. 12mm Total Length: Approx. 28mm Body Material: Plastic Contact Material: Silver-Plated Metal Terminal Type: 2 Pin Solder/Quick Connect Operating Temperature: -25°C to +85°C 🔹 Applications This push button lock switch is suitable for many electronic and electrical applications, including: DIY electronics projects Industrial control panels Automation systems Robotics projects Power control circuits Alarm systems Electronic devices Small appliances 🔹 Package Includes 1 × 3A 250V Yellow Push Button ON/OFF Lock Switch
RS-12 Green 2 Pin Mini Rocker Switch – 6A 250V ON/OFF Standard SPDT Plastic Switch
[Mechanical Switches] 🔘 RS-12 Green 2 Pin Mini Rocker Switch 6A 250V ON/OFF Panel Mount Switch Compact Design • 6A Current Rating • Durable Iron Contacts • Reliable Power Switching The RS-12 Green 2 Pin Mini Rocker Switch is a high-quality, compact ON/OFF panel mount switch designed for reliable switching in electrical and electronic applications. Manufactured using durable materials and iron contacts, this rocker switch ensures dependable performance, smooth operation, and long service life. With a 6A @ 250V AC rating, it is suitable for controlling AC or DC power in home appliances, power supplies, battery chargers, DIY electronics, industrial equipment, automation systems, and control panels. Its 2-pin SPST (Single Pole Single Throw) configuration provides simple ON/OFF switching, while the compact snap-in design allows easy installation even in limited panel space. The attractive green rocker actuator offers clear ON/OFF indication, making it easy to identify the switch position. Designed for up to 100,000 mechanical operations, the RS-12 rocker switch is an excellent choice for both professional and hobby electronics projects. ⭐ Features High-quality RS-12 mini rocker switch Compact 2-pin panel mount design Simple ON/OFF switching operation Rated for 6A at 250V AC Durable plastic housing Iron contact terminals Smooth and reliable switching performance Long mechanical life up to 100,000 cycles Easy snap-in installation Suitable for AC and DC switching Ideal for industrial, commercial, and DIY applications 📋 Technical Specifications Product Name: RS-12 Green Mini Rocker Switch Product Type: Rocker Switch Switch Function: ON/OFF Switch Configuration: SPST (Single Pole Single Throw) Number of Pins: 2 Rated Voltage: 250V AC Rated Current: 6A Power Rating: 250V / 6A Terminal Type: Solder Terminals Contact Material: Iron Housing Material: Plastic Illumination: Non-Illuminated Mechanical Life: Up to 100,000 Operations Mounting Type: Panel Mount (Snap-In) Color: Green Rocker with Black Housing Response Time: Instant RoHS Compliance: No 🔧 Applications Suitable for: Home Appliances Power Supplies Battery Chargers DIY Electronics Arduino Projects Raspberry Pi Projects Robotics Industrial Control Panels Automation Equipment Audio Equipment LED Lighting Systems Electronic Toys Test Equipment Consumer Electronics Repair & Maintenance 📦 Package Includes 1 × RS-12 Green 2 Pin Mini Rocker Switch ⚠️ Note Verify the switch rating before connecting high-voltage or high-current loads. Disconnect power before installation or maintenance. Product color, markings, and dimensions may vary slightly depending on the manufacturing batch.
3A 250V Green Push Button ON/OFF Lock Switch (Self-Locking)
[Mechanical Switches] 🟢 3A 250V Green Push Button ON/OFF Lock Switch (Self-Locking) Self-Locking Push Button • Push ON / Push OFF • 3A 250V Rating • Panel Mount • Green Button The 3A 250V Green Push Button ON/OFF Lock Switch is a compact and durable self-locking push button switch designed for reliable ON/OFF control in electrical and electronic applications. Unlike a momentary push button, this switch features a push ON / push OFF locking mechanism that remains in its selected position until pressed again. Designed for easy panel mounting, the switch features a 12mm mounting hole and a bright green push button for clear identification in control panels and electronic enclosures. Its rugged plastic housing and silver-plated contacts ensure excellent electrical conductivity, stable switching, and long service life. With a rating of 3A at 250V AC, this switch is ideal for industrial equipment, automation systems, robotics, power control circuits, DIY electronics, alarm systems, and various electronic devices. ⭐ Features Self-locking push button switch Push ON / Push OFF operation Bright green push button Rated for 3A at 250V AC Compact and lightweight design Easy panel mount installation Durable plastic housing Silver-plated contacts for reliable conductivity Stable and reliable switching performance Suitable for AC and low-voltage DC applications Long mechanical life Ideal for industrial and DIY applications 📋 Technical Specifications Product Type: Push Button ON/OFF Lock Switch Switch Type: Self-Locking (Latching) Operation: Push ON / Push OFF Rated Voltage: 250V AC Rated Current: 3A Button Color: Green Mounting Type: Panel Mount Mounting Hole Diameter: Approx. 12mm Button Diameter: Approx. 12mm Overall Length: Approx. 28mm Terminal Type: 2-Pin Solder / Quick Connect Contact Material: Silver-Plated Metal Body Material: Durable Plastic Operating Temperature: -25°C to +85°C 🔧 Applications Suitable for: Industrial Control Panels Automation Systems Robotics Projects DIY Electronics Power Control Circuits Alarm Systems Electronic Equipment Small Home Appliances Instrumentation Panels Test Equipment Educational Projects Control Boxes 📦 Package Includes 1 × 3A 250V Green Push Button ON/OFF Self-Locking Switch ⚠️ Note This is a self-locking (maintained) push button switch, not a momentary switch. Press once to switch ON and press again to switch OFF. Ensure the switch rating is suitable for your application before installation. Disconnect power before wiring the switch.
12mm x 33M Kapton Tape High Temperature Heat Resistant
[Kapton Tapes] Kapton Tape, also known as Polyimide Tape, is an electrically insulating heat resistant tape that has many uses for 3D printers. Designed for high temperature masking applications, including the protection of printed circuit board gold finger contacts during wave soldering, heater bed in 3D printer. Kapton tape is a usable print surface for printing ABS/PLA thermal plastic on a Heated Bed for 3D printer. For ABS to stick to Kapton, the Kapton needs to be hot (different sources mention minimum temperatures between 80-130 °C). Also the Kapton should be free of grease, grease can be removed with acetone or a propane torch. This Product Known as 12mm High-Temperature Heat Resistant Kapton Tape Polyimide 30 Meter Roll,12mm High-Temperature Heat Resistant Polyimide Koptan Tape – 30 Meter, 12mm ESD Heat Resistance Polyimide Tape Sticker Strong Adhesive 30 meter Long Heat Resistant up to 280°C, Kapton Tape, Saim Koptan Tape 12MM x 30 Meter Tawny High-Temperature Heat Resistant Insulation Polyimide Film Tape with Silicone Adhesive,12mm Kapton Tape for 3D Printer 30 Meter Length, High-Temperature Heat Resistant Kapton Tape Polyimide Film Adhesive, Kapton Tape Heat Resistant Adhesive Tape 12mm, Heat Resistant Tape, Temperature Resistant Tape, Heatbed, Insulating Material, Insulation Tape, Polyimide Kapton Tape, Kapton Tape. Application: Masking on printed circuit board during soldering Masking for vacuum deposition Holding samples or parts in high vacuum Positioning tape for cryo applications Electrical insulation on transformer, coil, and electromotors Specification:- Material: Polyimide Product: Kapton Tape Heat Resistance: 180°C Spindle type: Roll Color: Metallic Brown One-side self-adhesive Length: 33 Meter Width: 12 mm Approx Weight: 25gm Package Include:- 1x12mm x 33M Kapton Tape High Temperature Heat Resistant
Out of stockZB2L3 18650 Li-ion Lithium Lead-acid Battery Capacity Meter Discharge Tester Analyzer
[Battery Capacity Tester] Description: Material: Electrical components Color: See pictures ZB2L3 battery capacity tester discharge type 1.2-12V external load capacity of the battery and other tests 18650 Tools, single-function, by controlling the load off and get real-time integrated discharge current capacity results Maximum support 15V 3A discharged through the discharge voltage and current, itself does not discharge Maximum capacity statistics support 9999Ah (9999000mAh) Automatically identifying and developing appropriate battery termination voltage can also be manually adjusted Specifications: Power supply voltage: DC4.5-6V (micro USB connector) Operating Current: less than 70mA Discharge voltage: 1.00V-15.00V 0.01V resolution Termination voltage range: 0.5-11.0V Supported by current: 3.000A 0.001A resolution Maximum voltage measurement error: 1% + 0.02V Maximum current measurement error: 1.5% + – 0.008A Maximum battery capacity range: 9999Ah (1Ah = 1000mAh) greater value by shifting the decimal point to switch, when the display is less than 10Ah X.XXX, as shown above to achieve 10Ah XX.XX, and so on. Board size: 50mmX37mm Finished Size: 50mmX37mmX17mm (length X width X height maximum position size, contains copper foot height) Instructions: 1. The first test should be a fully charged battery. 2. Connect the battery to be tested positive to positive input, a negative input to the negative, can not be reversed (with load reversal may damage the circuit)! Load connected to the output of the positive and negative output, to work through the tester micro USB power supply (not available desktop or laptop USB powered), then the battery voltage. 3. Direct start test need only one press of the “OK” button, the tester can automatically develop an appropriate termination voltage of the battery full charge voltage, and will start flashing after the test three times. Need to develop artificial termination voltage only when the battery voltage display state by pressing “+” or “-” buttons to modify the termination voltage display beginning with P, behind the representative voltage resolution 0.1V, set up after pressing the “OK “start testing. 4. After the start of the test the tester will control the load of the electronic switch is turned on, the test data shows that the process will release capacity (Ah), current discharge current (A) and battery voltage (V) between the wheel was. When the battery voltage reaches the set cut-off voltage, load control switches off the tester display data stays in capacity (Ah) and above and the corresponding indicator flashes quickly together, now displays the actual capacity of the battery is discharging capacity, about the press “OK” to terminate flashing allows stable data display, press again “OK” button to return to the power-on state can just replace the battery test the next section …… Error codes and their meanings: Err1: battery voltage is above 15V Err2: battery voltage is lower than the termination voltage Err3: Battery can not afford to load or discharge current line too much resistance Err4: overcurrent (current exceeds 3.1A) Err5:Improper use or incorrect wiring has caused the device to be burned out and cannot be used (current sampling or control switch MOS burned out). Note: Use the resistance of the discharge process, resistive load will seriously heat, please pay attention to safety! This circuit voltage in order to improve the measurement accuracy, specially designed DC bias, when the terminal displays nothing then a small voltage does not affect the actual measurement, if you are shorting the input terminals (absolute 0V) will show 0 No retail package Quantity:1Pc Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!! Package Content: 1Pc x battery capacity tester 2Pc x Load resistor Power Battery Capacity Tester LED Display Micro USB Li-ion Lithium 18650 External Load Battery Discharge Testing Analyzer
0.28 inch 3.5-30V Two Wire DC Voltmeter Yellow
[Ammeter and Voltmeter] This is tiny and compact digital voltmeter with red LED Display. 0.28inch 3.5-30V Two Wire DC Voltmeter Yellow Panel requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink!!!! The red wire is to connect to the positive pole, the black wire is to connect to the negative pole. No need to worry even if there is any connection mismatch of the wires, the electric circuit wont be a boom because it features reverse polarity protection. This voltmeter doesn't need external drive working power, it can work with measuring voltage, the working voltages range is 3.5-30V. To reach the best measurement accuracy, this voltmeter will automatically move the decimal points position according to the different measuring voltage. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point. This voltmeter can be used to measure the storage battery's voltage in motorcycles and cars and also can grasp the storage batterys status. It also can be used to measure other voltage. 30V is the voltmeters maximum operating limited voltage, please leave enough margin when working, to avoid voltmeters permanent damage because of an electrical spark, power supply ripple, or other too high abrupt change of voltage. Very bight and decent LED Display is ready to measure the dc voltages in the range of 3.5V to 30V. Connections : Red Wire: source +ve terminal. Black Wire: Source -ve terminal. Note: The display weight and Dimensions may have2% error. Features : Very small and lightweight voltmeter module. Very handy and easy to use. Green LED display. Dont need the external power supply because it is a self-powered version of this display. Best operates in the working voltage range of 5V to 24V 100% Brand new and high quality. 📑 Additional Information Accuracy: 0.1 VColor: YellowWires: 2 (Two-Wire Design)Display ON Voltage: 2.5 VOperating Voltage: 3.6 V ~ 28 V DCCurrent Consumption: 15 mARefresh Speed: 200 ms (one update)Minimum Input Voltage: 3.6 VMaximum Input Voltage: 28 VOperating Temperature: -10°C to 60°CMounting Hole Distance: 3 cmHeight: 0.72 cmLength: 1.3 cmWidth: 3 cmWeight: 3 g Package Includes : 1 x 0.72 cm (0.28 inch) 3.5-30V Two Wire DC Voltmeter Yellow * Product Images are shown for illustrative purposes only and may differ from actual product.
0.28 inch 3.5-30V Two Wire DC Voltmeter Green
[Ammeter and Voltmeter] This is tiny and compact digital voltmeter with red LED Display. 0.28inch 3.5-30V Two Wire DC Voltmeter Green Panel requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink!!!! The red wire is to connect to the positive pole, the black wire is to connect to the negative pole. No need to worry even if there is any connection mismatch of the wires, the electric circuit wont be a boom because it features reverse polarity protection. This voltmeter doesn't need external drive working power, it can work with measuring voltage, the working voltages range is 3.5-30V. To reach the best measurement accuracy, this voltmeter will automatically move the decimal points position according to the different measuring voltage. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point. This voltmeter can be used to measure the storage battery's voltage in motorcycles and cars and also can grasp the storage batterys status. It also can be used to measure other voltage. 30V is the voltmeters maximum operating limited voltage, please leave enough margin when working, to avoid voltmeters permanent damage because of an electrical spark, power supply ripple, or other too high abrupt change of voltage. Very bight and decent LED Display is ready to measure the dc voltages in the range of 3.5V to 30V. Connections : Red Wire: source +ve terminal. Black Wire: Source -ve terminal. Note: The display weight and Dimensions may have2% error. Features : Very small and lightweight voltmeter module. Very handy and easy to use. Green LED display. Dont need the external power supply because it is a self-powered version of this display. Best operates in the working voltage range of 5V to 24V 100% Brand new and high quality. Additional information Accuracy 0.1 V Color Green Wires 2 Display ON Voltage (V) 2.5 Operating Voltage (VDC) 3.6 ~ 28 Current Consumption (mA) 15 Refresh Speed (ms) 200 (one time) Minimum Input (V) 3.6 Highest Input (V) 28 Operating Temperature (C). -10 to 60 Holes for Mounting 3 cm Height (cm) 0.72 cm Length (cm) 1.3 cm Width (cm) 3 cm Weight (gm) 3 gm Package Includes : 1 x 0.72 cm (0.28 inch) 3.5-30V Two Wire DC Voltmeter Green * Product Images are shown for illustrative purposes only and may differ from actual product.
0.28 inch 3.5-30V Two Wire DC Voltmeter Blue
[Ammeter and Voltmeter] This is tiny and compact digital voltmeter with red LED Display. 0.28inch 3.5-30V Two Wire DC Voltmeter Blue Panel requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink!!!! The red wire is to connect to the positive pole, the black wire is to connect to the negative pole. No need to worry even if there is any connection mismatch of the wires, the electric circuit wont be a boom because it features reverse polarity protection. This voltmeter doesn't need external drive working power, it can work with measuring voltage, the working voltages range is 3.5-30V. To reach the best measurement accuracy, this voltmeter will automatically move the decimal points position according to the different measuring voltage. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point. This voltmeter can be used to measure the storage battery's voltage in motorcycles and cars and also can grasp the storage batterys status. It also can be used to measure other voltage. 30V is the voltmeters maximum operating limited voltage, please leave enough margin when working, to avoid voltmeters permanent damage because of an electrical spark, power supply ripple, or other too high abrupt change of voltage. Very bight and decent LED Display is ready to measure the dc voltages in the range of 3.5V to 30V. Connections : Red Wire: source +ve terminal. Black Wire: Source -ve terminal. Note: The display weight and Dimensions may have2% error. Features : Very small and lightweight voltmeter module. Very handy and easy to use. Blue LED display. Dont need the external power supply because it is a self-powered version of this display. Best operates in the working voltage range of 5V to 24V 100% Brand new and high quality. Additional information Accuracy 0.1 V Color Blue Wires 2 Display ON Voltage (V) 2.5 Operating Voltage (VDC) 3.6 ~ 28 Current Consumption (mA) 15 Refresh Speed (ms) 200 (one time) Minimum Input (V) 3.6 Highest Input (V) 28 Operating Temperature (C). -10 to 60 Holes for Mounting 3 cm Height (cm) 0.72 cm Length (cm) 1.3 cm Width (cm) 3 cm Weight (gm) 3 gm Package Includes : 1 x 0.72 cm (0.28 inch) 3.5-30V Two Wire DC Voltmeter Blue * Product Images are shown for illustrative purposes only and may differ from actual product.
100K Rotary Potentiometer Round Shaft Elcon
[Potentiometer] 100KΩ Rotary Potentiometer Round Shaft Elcon The 100KΩ Rotary Potentiometer Round Shaft Elcon is a reliable 3-pin linear rotary potentiometer designed for adjusting electrical parameters such as voltage, current, brightness, motor speed, and other control functions in electronic circuits. By rotating the shaft, the resistance can be smoothly adjusted across its available range, making it suitable for a wide variety of DIY and electronic applications. With its compact 16mm body, 6mm round shaft, and through-hole mounting design, this potentiometer is easy to install on electronic PCBs and control panels. Its linear resistance characteristics make it suitable for applications such as LED brightness control, fan speed control, motor control, power supply adjustment, and general-purpose voltage control. ⭐ Key Features 100KΩ resistance value 3-pin rotary potentiometer Linear potentiometer Smooth rotary adjustment 6mm round shaft 13mm shaft length Compact 16mm body diameter Through-hole mounting Suitable for PCB and electronic circuits Ideal for voltage and resistance adjustment Suitable for DIY and electronic projects Elcon brand 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Resistance Value: 100KΩ Configuration: 3 Pin / Single Gang Tolerance: ±20% Shaft Type: Round Shaft Shaft Diameter: 6mm Shaft Length: 13mm Body Diameter / Width: 16mm Total Height: Approx. 28mm Mounting Type: Through Hole Operating Temperature: -40°C to +80°C Weight: Approx. 8g 🔧 Applications LED Brightness Control Fan Speed Control Motor Speed Control Voltage Adjustment Current Adjustment Power Supply Circuits Audio & Electronic Circuits Arduino Projects DIY Electronics Projects Electronic Prototyping 🛠️ How It Works A potentiometer is a variable resistor with three terminals. The two outer terminals are connected to the resistive track, while the center terminal acts as the wiper. Rotating the shaft changes the wiper position and therefore changes the resistance or output voltage in the circuit. 📦 Package Includes 1 × 100KΩ Rotary Potentiometer Round Shaft Elcon ⚠️ Note Product images are shown for illustrative purposes only and may differ slightly from the actual product. The 100KΩ value, tolerance, dimensions, and shaft length should be verified against the actual product batch before installation.
10K Rotary Potentiometer Round Shaft 3Pin Elcon
[Potentiometer] 10KΩ Rotary Potentiometer Round Shaft Elcon The 10KΩ Rotary Potentiometer Round Shaft Elcon is a reliable 3-pin variable resistor designed for adjusting electrical parameters such as voltage, current, brightness, motor speed, and other control functions in electronic circuits. By rotating the shaft, the resistance can be smoothly adjusted across its available range, making it suitable for a wide variety of DIY and electronic applications. With its compact 16mm body, 6mm round shaft, and through-hole mounting design, this potentiometer is easy to install on electronic PCBs and control panels. The linear resistance characteristics make it particularly suitable for applications such as LED brightness control, fan speed control, motor control, and general-purpose voltage adjustment. ⭐ Key Features 10KΩ resistance value 3-pin rotary potentiometer Linear potentiometer Smooth rotary adjustment 6mm round shaft Compact 16mm body diameter Through-hole mounting Suitable for PCB and electronic circuits Useful for voltage and current adjustment Suitable for LED, fan and motor control applications Elcon brand 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Resistance Value: 10KΩ Configuration: 3 Pin / Single Gang Tolerance: ±20% Shaft Type: Round Shaft Shaft Diameter: 6mm Shaft Length: 13mm Body Diameter / Width: 16mm Total Height: 30mm Mounting Type: Through Hole Operating Temperature: -40°C to +80°C Weight: Approx. 8g 🔧 Applications LED Brightness Control Fan Speed Control Motor Speed Control Voltage Adjustment Current Adjustment Power Supply Circuits Arduino Projects DIY Electronics Projects Audio & Electronic Circuits Electronic Prototyping 🛠️ How It Works A potentiometer is a variable resistor with three terminals. The two outer terminals are connected to the resistive track, while the center terminal acts as the wiper. Rotating the shaft changes the wiper position and therefore changes the resistance or output voltage in the circuit. 📦 Package Includes 1 × 10KΩ Rotary Potentiometer Round Shaft Elcon ⚠️ Note Product images are shown for illustrative purposes only and may differ slightly from the actual product. The 10KΩ value and ±20% tolerance are based on the supplied product specifications.
0.28 inch 3.5-30V Two Wire DC Voltmeter Red
[Ammeter and Voltmeter] This is tiny and compact digital voltmeter with red LED Display. 0.28inch 3.5-30V Two Wire DC Voltmeter Red Panel requires only a few minutes of configuration and is as simple as directly connecting wires to the source you want to measure and seeing the LED blink!!!! The red wire is to connect to the positive pole, the black wire is to connect to the negative pole. No need to worry even if there is any connection mismatch of the wires, the electric circuit wont be a boom because it features reverse polarity protection. This voltmeter doesn't need external drive working power, it can work with measuring voltage, the working voltages range is 3.5-30V. To reach the best measurement accuracy, this voltmeter will automatically move the decimal points position according to the different measuring voltage. When it measures the voltage below 10V, it will display two places after the decimal point. When it measures the voltage above 10V, it will display one place after the decimal point. This voltmeter can be used to measure the storage battery's voltage in motorcycles and cars and also can grasp the storage batterys status. It also can be used to measure other voltage. 30V is the voltmeters maximum operating limited voltage, please leave enough margin when working, to avoid voltmeters permanent damage because of an electrical spark, power supply ripple, or other too high abrupt change of voltage. Very bight and decent LED Display is ready to measure the dc voltages in the range of 3.5V to 30V. Connections : Red Wire: source +ve terminal. Black Wire: Source -ve terminal. Note: The display weight and Dimensions may have2% error. Features : Very small and lightweight voltmeter module. Very handy and easy to use. Red LED display. Dont need the external power supply because it is a self-powered version of this display. Best operates in the working voltage range of 5V to 24V 100% Brand new and high quality. Additional information Accuracy 0.1 V Color Red Wires 2 Display ON Voltage (V) 2.5 Operating Voltage (VDC) 3.6 ~ 28 Current Consumption (mA) 15 Refresh Speed (ms) 200 (one time) Minimum Input (V) 3.6 Highest Input (V) 28 Operating Temperature (C). -10 to 60 Holes for Mounting 3 cm Height (cm) 0.72 cm Length (cm) 1.3 cm Width (cm) 3 cm Weight (gm) 3 gm Package Includes : 1 x 0.72 cm (0.28 inch) 3.5-30V Two Wire DC Voltmeter Red * Product Images are shown for illustrative purposes only and may differ from actual product.
TowerPro Metal Gear MG90S Mini Digital Servo Motor (180° Rotation)
[Servo Motor] ⚙️ TowerPro MG90S Mini Digital Metal Gear Servo Motor (180°) Metal Gear • Digital Servo • 180° Rotation • High Precision • Ideal for RC & Robotics The TowerPro MG90S Mini Digital Servo Motor is a compact, high-performance 9g metal gear servo designed for precise position control in robotics, RC models, automation, and DIY electronics projects. Equipped with all-metal gears, a digital control circuit, and high positioning accuracy, the MG90S offers greater durability, faster response, and higher torque than standard plastic gear servos. Operating from 4.8V to 6.0V DC, the servo delivers a stall torque of up to 2.2 kg·cm and a rotation angle of approximately 180°, making it ideal for robotic arms, pan-tilt camera systems, RC airplanes, RC cars, boats, educational kits, and embedded control applications. The standard 3-wire JR/Futaba-compatible connector allows direct interfacing with Arduino, ESP32, Raspberry Pi, STM32, and most RC receivers. Its lightweight design, compact dimensions, and excellent holding torque make the MG90S one of the most popular micro servos for hobbyists, students, and professionals alike. ⭐ Features Genuine TowerPro MG90S digital servo Durable all-metal gear transmission Approximate 180° rotation angle High positioning accuracy Fast control response High holding torque Smooth and quiet operation Lightweight and compact design Standard 3-wire servo interface Compatible with Arduino, ESP32, Raspberry Pi and RC receivers Ideal for robotics, RC models and automation projects 📋 Technical Specifications Product Type: Mini Digital Servo Motor Brand: TowerPro Model: MG90S Gear Type: Metal Gear Rotation Angle: Approximately 180° Operating Voltage: 4.8V–6.0V DC Stall Torque: 1.8 kg·cm @ 4.8V 2.2 kg·cm @ 6.0V Operating Speed: 0.10 sec/60° @ 4.8V 0.08 sec/60° @ 6.0V Control Signal: PWM (50Hz Standard Servo Signal) Dead Band Width: 1µs Connector Type: JR / Futaba Compatible Cable Length: Approximately 25cm Dimensions: 22.8 × 12.2 × 28.5 mm Weight: Approximately 13.4g Operating Temperature: 0°C to +55°C These specifications are consistent with the manufacturer's published specifications. 🔧 Applications Suitable for: Arduino Projects ESP32 Projects Raspberry Pi Projects Robotic Arms Humanoid Robots RC Airplanes RC Cars RC Boats Pan-Tilt Camera Systems Automatic Door Mechanisms DIY Electronics Educational Robotics Smart Automation Projects Mechatronics Projects 📦 Package Includes 1 × TowerPro MG90S Mini Digital Servo Motor 1 × Servo Horn Set Single Arm Horn Double Arm Horn Four Arm Horn 1 × Mounting Screw Set ⚠️ Note Operate the servo only within the recommended 4.8V–6.0V DC supply range. For stable operation, use an external regulated power supply when driving the servo from microcontrollers. Product appearance, cable color, or accessories may vary slightly depending on the manufacturing batch. Counterfeit MG90S servos are common in the market. Purchase from trusted suppliers for genuine performance.