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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
TP-Link Deco X20 (WiFi 6 Mesh, 3-pack)
Whole-home WiFi 6 mesh. AX1800 each unit, covers ~5800 sq ft. Easy phone-app setup.
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
16 sq mm Copper Ring Lug Cable Terminal
[Terminal Connector] 16 sq mm Pure Copper Ring Lug Cable Terminal The 16 sq mm Pure Copper Ring Lug Cable Terminal is a high-quality electrical cable lug designed for making secure and reliable connections in high-current electrical systems. Made from pure copper, it provides excellent electrical conductivity and a strong mechanical connection between the cable and the terminal point. The ring lug design allows the terminal to be securely fastened to battery terminals, busbars, studs, bolts, and other electrical connection points. It is suitable for battery packs, inverters, UPS systems, solar installations, automotive wiring, and industrial electrical applications. The compact construction provides a reliable connection while allowing easy installation using a suitable crimping tool. The terminal is ideal for applications where a strong and low-resistance electrical connection is required. ⭐ Key Features Made from pure copper Designed for 16 sq mm cable Ring lug terminal design Excellent electrical conductivity Strong and reliable mechanical connection Suitable for high-current applications Easy bolt and stud mounting Suitable for battery and power wiring Ideal for electrical and DIY applications 📋 Technical Specifications Product Type: Copper Ring Cable Lug Material: Pure Copper Compatible Cable Size: 16 sq mm Terminal Type: Ring Lug Finish: Natural Copper / Tinned, depending on variant Connection Type: Bolt / Stud Mount Application: High-Current Electrical Connections 🔧 Applications Lithium Battery Packs LiFePO₄ Battery Systems Lead-Acid Batteries Inverter Connections UPS Systems Solar Power Systems Automotive Wiring Electrical Panels Power Distribution Industrial Wiring DIY Battery Projects 📦 Package Includes 1 × 16 sq mm Pure Copper Ring Lug Cable Terminal ⚠️ Precautions Select the correct lug according to the 16 sq mm cable size and required mounting hole diameter. Use a suitable cable-lug crimping tool for a secure connection. Ensure the cable is properly inserted and crimped before use. Do not exceed the safe current capacity of the cable and terminal assembly. Ensure all electrical connections are properly insulated and secured.
107 × 61mm 5V 180mA Mini Solar Panel Cell Module
[Solar Panel] ☀️ 107 × 61mm 5V 180mA Mini Solar Panel Cell Module (0.9W) 5V Output • 180mA Current • Polycrystalline Solar Cell • Compact & Lightweight • DIY Solar Projects The 107 × 61mm Mini Solar Panel Cell Module is a compact and efficient photovoltaic module designed to convert sunlight into clean and renewable electrical energy. Delivering a stable 5V output with a maximum current of 180mA, this solar panel is ideal for powering small electronic devices, battery charging circuits, educational projects, and DIY solar applications. Built using high-quality polycrystalline silicon solar cells, the panel provides efficient energy conversion with reliable performance under direct sunlight. Its compact size and lightweight construction make it easy to integrate into portable electronics, robotics, IoT devices, and renewable energy projects. Designed with a durable, weather-resistant construction, the module is suitable for both indoor demonstrations and outdoor applications. Pre-drilled mounting holes allow quick installation on enclosures, backpacks, models, and custom solar-powered devices. ⭐ Features High-efficiency polycrystalline solar panel Stable 5V DC output Maximum output current of 180mA Maximum power output of 0.9W Compact and lightweight design Efficient solar energy conversion Weather-resistant construction Pre-drilled mounting holes Easy integration into DIY projects Eco-friendly renewable energy source Maintenance-free operation Suitable for educational and hobby applications 📋 Technical Specifications Product Type: Mini Solar Panel Cell Module Panel Dimensions: 107 × 61 mm Cell Type: Polycrystalline Silicon Maximum Power Output: 0.9W Output Voltage: 5V DC Maximum Output Current: 180mA Conversion Efficiency: Approx. 17% Operating Temperature: -40°C to +85°C Storage Temperature: -40°C to +85°C Construction: Waterproof, Weather-Resistant Mounting: Pre-Drilled Mounting Holes Material: High-Quality Polycrystalline Silicon Weight: Approx. 16g 🔧 Applications Suitable for: DIY Solar Projects Solar Battery Chargers Mobile Charging Projects Arduino Projects ESP32 Projects Raspberry Pi Accessories Robotics IoT Devices Solar Garden Lights Educational Science Experiments Portable Electronics Renewable Energy Demonstrations Emergency Backup Projects Small DC Power Applications 📦 Package Includes 1 × 107 × 61mm 5V 180mA Mini Solar Panel Cell Module ⚠️ Note Output voltage and current depend on sunlight intensity, panel angle, and environmental conditions. For battery charging applications, use a suitable charge controller or charging module. Designed for low-power electronic projects and educational use. Product appearance and dimensions may vary slightly depending on the manufacturing batch.
XH-W1219 12V Digital Temperature Controller Module with Dual LED Display & Waterproof NTC Sensor
[Relay Module, Temperature Sensor] 🌡️ XH-W1219 12V Digital Temperature Controller Module with Dual LED Display & Waterproof NTC Sensor Dual LED Display • 12V DC Operation • 10A Relay Output • Heating & Cooling Modes • Waterproof NTC Sensor The XH-W1219 12V Digital Temperature Controller Module is a high-precision thermostat controller designed for automatic temperature monitoring and control in heating and cooling applications. Powered by 12V DC, this module features a dual LED display that simultaneously shows the current temperature and set temperature, making operation more convenient than the popular W1209 controller. Equipped with a waterproof NTC 10K temperature sensor, the XH-W1219 accurately measures temperatures from -50°C to +110°C. The onboard 10A relay output can directly control heaters, cooling fans, pumps, compressors, and other electrical loads within its rated capacity. The module is based on a Nuvoton microcontroller, which stores all settings in non-volatile memory, ensuring that user configurations are retained even after power loss. It supports both Heating (H) and Cooling (C) modes, adjustable hysteresis, temperature calibration, delay start, and high-temperature alarm functions. Ideal for incubators, aquariums, refrigeration systems, greenhouse automation, HVAC equipment, battery temperature monitoring, and industrial automation, the XH-W1219 provides reliable and accurate temperature control in a compact module. ⭐ Features Dual LED display for simultaneous temperature and setpoint display Operates on 12V DC High-accuracy waterproof NTC 10K temperature sensor Temperature control range from -50°C to +110°C Supports Heating and Cooling modes Built-in 10A relay output Adjustable temperature hysteresis Temperature calibration function Adjustable relay delay start High-temperature alarm function Stores settings in non-volatile memory Easy configuration using three push buttons High measurement accuracy (0.1°C resolution) Based on a Nuvoton MCU Compact PCB design with mounting holes 📋 Technical Specifications Product Type: Digital Temperature Controller Module Model: XH-W1219 Operating Voltage: 12V DC Display: Dual 3-Digit LED (Current Temperature & Set Temperature) Temperature Sensor: Waterproof NTC 10K Thermistor Temperature Control Range: -50°C to +110°C Temperature Resolution: 0.1°C Temperature Calibration: -10°C to +10°C Relay Output: 10A (Maximum) Relay Contact Rating: Up to 120VAC 10A / 14VDC 10A Control Modes: Heating (H) / Cooling (C) Hysteresis Setting: 0.1°C to 30°C Delay Start: 0–10 Minutes High Temperature Alarm: -49°C to +110°C Memory: Non-Volatile Parameter Storage Controller: Nuvoton MCU Dimensions: Approx. 60 × 44 × 17 mm Weight: Approx. 22 g (may vary slightly by manufacturer) ⚙️ Parameter Functions Parameter Description P0 Heating (H) / Cooling (C) Mode Selection P1 Temperature Hysteresis (Return Difference) P2 Maximum Temperature Limit P3 Minimum Temperature Limit P4 Temperature Calibration P5 Relay Delay Start (0–10 Minutes) P6 High Temperature Alarm Setting 🔧 Applications Suitable for: Egg Incubators Aquarium Temperature Control Greenhouse Automation Refrigeration Systems Cooling Fans Heating Elements Water Heaters HVAC Systems Fermentation Equipment Battery Temperature Monitoring Industrial Automation Laboratory Equipment DIY Electronics Smart Home Projects Arduino & Raspberry Pi Projects (Relay Interface) 📦 Package Includes 1 × XH-W1219 12V Digital Temperature Controller Module 1 × Waterproof NTC 10K Temperature Sensor ⚠️ Note Operates only on 12V DC. The relay output is rated for 10A maximum. For higher-power loads, use an external contactor or relay. Sensor cable can be extended if required using appropriate wiring. Product appearance or PCB color may vary slightly depending on the manufacturing batch.
110 × 69mm 5V 180mA Mini Solar Panel Cell Module
[Solar Panel] ☀️ 110 × 69mm 5V 180mA Mini Solar Panel Cell Module (0.9W) 5V Output • 180mA Current • 0.9W Power • Polycrystalline Solar Cell • Compact & Lightweight The 110 × 69mm 5V 180mA Mini Solar Panel Cell Module is a compact and efficient photovoltaic module designed to convert sunlight into clean, renewable electrical energy. Delivering a stable 5V output with a maximum current of 180mA, this solar panel is ideal for powering low-power electronic devices, DIY solar projects, battery charging applications, and educational experiments. Built using high-quality polycrystalline silicon solar cells, the module offers efficient energy conversion while maintaining reliable performance under sunlight. Its lightweight construction and compact dimensions make it easy to integrate into portable devices, robotics projects, solar-powered gadgets, and outdoor applications. Designed for durability, the panel features a weather-resistant construction suitable for outdoor use. With pre-drilled mounting holes, installation is quick and convenient for a wide range of renewable energy projects. ⭐ Features High-efficiency polycrystalline solar panel Stable 5V DC output Maximum output current of 180mA Maximum power output of 0.9W Compact size for portable projects Lightweight and easy to install Weather-resistant construction Pre-drilled mounting holes Suitable for outdoor applications Eco-friendly renewable energy source No external power source required Ideal for educational and DIY projects 📋 Technical Specifications Product Type: Mini Solar Panel Cell Module Cell Type: Polycrystalline Silicon Maximum Power Output: 0.9W Output Voltage: 5V DC Maximum Output Current: 180mA Panel Dimensions: 110 × 69 mm Operating Temperature: -40°C to +85°C Storage Temperature: -40°C to +85°C Construction: Weather-Resistant Connector: None (Solder Wire Connection) Weight: Approximately 15g 🔧 Applications Suitable for: DIY Solar Projects Solar Battery Chargers Mobile Phone Charging Projects Arduino Projects ESP32 & ESP8266 Projects Raspberry Pi Accessories Robotics Projects Solar Garden Lights Educational Science Experiments IoT Devices Portable Electronic Devices Renewable Energy Demonstrations Emergency Backup Power Projects Small DC Loads 📦 Package Includes 1 × 110 × 69mm 5V 180mA Mini Solar Panel Cell Module ⚠️ Note Output voltage and current depend on sunlight intensity and panel orientation. For battery charging applications, use a suitable solar charge controller or charging module. This panel is intended for low-power applications and may not provide sufficient power under low-light conditions. Product appearance may vary slightly depending on the manufacturing batch.
Keltron 3300uF 25V Radial Electrolytic Capacitor High Performance Capacitor
[Through Hole Capacitor] The Keltron 3300uF 25V Electrolytic Capacitor is a high-performance aluminum electrolytic capacitor designed for energy storage, voltage filtering, and ripple suppression applications. It is widely used in power supply circuits, audio amplifiers, inverter systems, battery chargers, and industrial electronics. In addition, the capacitor provides excellent filtering capability by reducing voltage fluctuations and unwanted electrical noise. As a result, it helps improve circuit stability and enhances overall system performance. Because of its 3300uF high capacitance value, the capacitor is ideal for smoothing DC power rails and handling transient current demands. Furthermore, the 25V DC voltage rating makes it suitable for a variety of low-voltage electronic applications. The radial lead design allows easy PCB installation and secure mounting. Moreover, Keltron capacitors are known for their dependable quality, stable electrical characteristics, and long operational life. This capacitor is commonly used in audio amplifier power supplies, SMPS circuits, LED power supplies, inverter systems, battery chargers, and DIY electronics projects. 🔹 Key Features Genuine Keltron capacitor High capacitance 3300uF value Rated voltage of 25V DC Excellent ripple filtering performance Suitable for audio and power supply circuits Low leakage current Long operational life Radial lead through-hole design Reliable and stable performance 🔹 Technical Specifications Brand: Keltron Product Type: Electrolytic Capacitor Capacitor Type: Aluminum Electrolytic Capacitance: 3300uF Rated Voltage: 25V DC Tolerance: ±20% Mounting Type: Through-Hole (Radial Lead) Polarized: Yes Lead Type: Radial Operating Temperature: Up to 105°C (Series Dependent) Application: Filtering, Decoupling, Energy Storage 🔹 Applications This capacitor is suitable for: Audio amplifier circuits Power supply filtering SMPS circuits Inverter systems Battery chargers LED driver circuits Industrial electronics DIY electronics projects Electronic repair applications 🔹 Package Includes 1 × Keltron 3300uF 25V Radial Electrolytic Capacitor
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
3A 250V Blue Push Button Switch Momentary Type NO Lock Push Switch
[Mechanical Switches] The 3A 250V Blue Push Button Momentary Switch is a compact and reliable push-type switch designed for temporary ON/OFF control applications. It features a momentary non-locking mechanism, which means the switch remains active only while being pressed. In addition, the switch uses a Normally Open (NO) contact configuration. As a result, the electrical circuit closes only when the button is pressed and automatically returns to its original state after release. Because of its compact size and durable plastic construction, the switch is suitable for many electronic and industrial applications. Furthermore, the bright blue button improves visibility and allows easy 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 design allows quick and secure installation into control panels and electronic enclosures. This push button switch is widely used in DIY electronics, industrial automation, robotics systems, alarm systems, doorbell circuits, and power control applications. 🔹 Key Features Momentary push button operation Normally Open (NO) contact type Non-locking push switch design Compact and lightweight body Bright blue push button cap Easy panel mounting installation Stable and reliable switching operation Suitable for AC and DC applications 🔹 Technical Specifications Switch Type: Momentary Push Button Switch Contact Type: Normally Open (NO) Operation Type: Non-Locking (Push Only) 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 switch is suitable for many electronic and electrical applications, including: DIY electronics projects Industrial control panels Automation systems Robotics projects Doorbell and alarm systems Power control circuits Electronic devices 🔹 Package Includes 1 × 3A 250V Blue Push Button Momentary Switch
3A 250V Yellow Push Button Momentary Type No Lock Push Only
[Mechanical Switches] The 3A 250V Yellow Push Button Momentary Switch is a compact and reliable push-type switch designed for temporary ON/OFF control applications. It features a momentary non-locking mechanism, which means the switch remains active only while being pressed. In addition, the switch uses a Normally Open (NO) contact configuration. As a result, the electrical circuit closes only when the button is pressed and automatically returns to its original state after release. Because of its compact size and durable plastic construction, the switch is suitable for many electronic and industrial applications. Furthermore, the bright yellow button improves visibility and allows easy 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 design allows quick and secure installation into control panels and electronic enclosures. This push button switch is widely used in DIY electronics, industrial automation, robotics systems, alarm systems, doorbell circuits, and power control applications. 🔹 Key Features Momentary push button operation Normally Open (NO) contact type Non-locking push switch design Compact and lightweight body Bright yellow push button cap Easy panel mounting installation Stable and reliable switching operation Suitable for AC and DC applications 🔹 Technical Specifications Switch Type: Momentary Push Button Switch Contact Type: Normally Open (NO) Operation Type: Non-Locking (Push Only) 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 switch is suitable for many electronic and electrical applications, including: DIY electronics projects Industrial control panels Automation systems Robotics projects Doorbell and alarm systems Power control circuits Electronic devices 🔹 Package Includes 1 × 3A 250V Yellow Push Button Momentary Switch
3A 250V Red Push Button Momentary Type No Lock Push Only
[Mechanical Switches] The 3A 250V Red Push Button Momentary Switch is a compact and reliable push-type switch designed for temporary ON/OFF control applications. It features a momentary non-locking mechanism, which means the switch remains active only while being pressed. In addition, the switch uses a Normally Open (NO) contact configuration. As a result, the circuit closes only when the button is pressed and automatically returns to its original state after release. Because of its compact size and durable construction, the switch is suitable for many electronic and electrical projects. Furthermore, the bright red button improves visibility and allows quick identification during operation. The switch supports loads up to 3A at 250VAC, making it suitable for low-power AC and DC control applications. Moreover, the simple panel-mount structure allows fast installation into enclosures and control panels. This push button switch is widely used in DIY electronics, robotics systems, industrial automation, doorbell circuits, audio equipment, and control applications. 🔹 Key Features Momentary push button operation Normally Open (NO) contact type Non-locking push switch design Compact and lightweight construction Durable plastic body Easy panel mounting installation Bright red push button cap Suitable for AC and DC applications 🔹 Technical Specifications Switch Type: Momentary Push Button Switch Contact Type: Normally Open (NO) Operation Type: Non-Locking Momentary Rated Voltage: 250V AC Rated Current: 3A Button Color: Red Mounting Type: Panel Mount Mounting Hole Diameter: Approx. 12mm Button Diameter: Approx. 12mm Total Body Length: Approx. 28mm Body Material: Plastic Contact Material: Metal Contacts 🔹 Applications This push button switch is suitable for many electronic and industrial applications, including: DIY electronics projects Robotics systems Industrial control panels Automation systems Doorbell circuits Audio equipment Power control applications Electronic devices 🔹 Package Includes 1 × 3A 250V Red Push Button Momentary Switch
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.
18650 Lithium Battery Insulation For Nigative Pad 25 Pcs in one Sheet
[Insulation Paper] 18650 Lithium Battery Insulation For Nigative Pad This Single Hole Electrical Insulating Adhesive Mat for Battery Cell terminal Insulation is a cardboard paper for an 18650 battery insulator. Better protection to avoid short circuits on batteries.Easy peel-and-stick application. The Outer Ring Diameter is 17mm. The Thickness: is 0.25mm Battery Insulators Adhesive Paper Rings. Tags, 18650 Battery Insulator Ring Negative, 18650 Lithium Battery Insulation Ring For Negative Pad, Single Hole Electrical Insulating Adhesive Mat for Battery Cell Terminal Insulation. Tags, 18650, 18650 Battery Cover, Electrical Insulating Adhesive Mat, Lithium Battery Insulation Pad, 18650 Insulation Pad, 18650 21700 26650 32650 Adhesive corrugated paper, Battery Electrical Insulator Insulation Ring Adhesive For Negative Terminal. To buy an 18650 Lithium Battery: Click Here How to use.? Take off each insulation paper from the base paper. Put and stick upper hollow adhesive insulation paper on the top of the battery Negative. Put and stick lower solid adhesive insulation paper on the negative. Then, you can weld Ni tape or Ni-plated steel plate with positive, and negative to make the battery pack. Features: Easy to Install Heat-Resistant Design Compact and Lightweight Positive and Negative Terminal Insulation Features/Specs: Material: Barley Paper Compatibility: 18650/18500 Lithium Battery Ring Pad Use For Negative Terminal Outer Ring Diameter: 17 mm Thickness: 0.25 mm Applications: Electronic devices powered by 18650 battery cells Flashlights and portable lighting solutions DIY battery packs and configurations Power banks and battery-operated gadgets Custom battery projects and prototypes Package Includes: 1 x 18650 Lithium Battery Insulation Ring For Negative Pad Note: Product Images are shown for illustrative purposes only and may differ from the actual product
10A10 1000V 10A Silicon Rectifier Diode
[Diode] 10A10 – 1000V 10A Silicon Rectifier Diode 10A10 – 1000V 10A Silicon Rectifier, 10A axial rectifier diode with fast switching times suitable for general applications where a high current is required. Features/Specs: Part No: 10A10 Manufacturer: MIC (Master Instrument Corporation) High surge current capability Low leakage Low forward voltage drop High current capability Low lost Vr – Reverse Voltage: 1000 V If – Forward Current: 10 A Type: Standard Recovery Rectifiers Configuration: Single Vf – Forward Voltage: 1.1 V Ir – Reverse Current: 10 uA Operating Temperature: – 55 C to + 150 C Mounting Style: Through Hole Package/Case: R-6 Datasheet: 10A10 Datasheet Package Includes: 1 x 10A10 – 1000V 10A Silicon Rectifier Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
BC557 PNP General Purpose Transistor – TO-92-3 Package
[Transistor] BC557 PNP General Purpose Transistor – TO-92-3 Package BC557 PNP General Purpose Transistor 45V 100mA BC557 is a semiconductor device used to amplify or switch electronic signals and electrical power. This transistor composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. This product is known as BC557, BC557BTA, BC557ATA, BC557BTF, BC557B, BC557C, BC557A, BC557CBK, BC557BBK Features: Low current (max. 100 mA) Low voltage (max. 65 V). Low error voltage Fast switching speed Full-voltage operation High power and current handling capability Features/Specs: Product Type: BJTs – Bipolar Transistors Transistor Polarity: PNP Configuration: Single Collector- Emitter Voltage VCEO Max: 45 V Collector- Base Voltage VCBO: 50 V Emitter- Base Voltage VEBO: 5 V Pd – Power Dissipation: 500 mW Gain Bandwidth Product fT: 100 MHz DC Collector/Base Gain hFE Min: 125 DC Current Gain hFE Max: 125 at 2 mA, 5 V Minimum Operating Temperature: – 65°C Maximum Operating Temperature: + 150°C Mounting Style: Through Hole Package/Case: TO-92-3 Applications: Driver Modules like Relay Driver, LED driver etc.. Amplifier modules like Audio amplifiers, signal Amplifier etc.. Darlington pair Datasheet: BC557 PNP Transistor Package Includes: 1 x BC557 PNP General Purpose Transistor – TO-92-3 Package Note: Product Images are shown for illustrative purposes only and may differ from actual product
Single Shaft BO Motor 100 RPM
[Gear Motor] 100 RPM Single Shaft BO Motor – Straight Shaft The 100 RPM Single Shaft BO Motor is a lightweight and cost-effective solution designed for DIY robotics, small automation systems, and educational projects. Offering an excellent balance between torque and speed at low operating voltages, this motor is ideal for small to medium-sized robots. With its compact and durable construction, the motor features pre-drilled mounting holes for easy installation and perfectly pairs with 69mm robot wheels, making it an excellent choice for 2WD mobile robot platforms. Its low noise, low power consumption, and reliable torque output make it a favorite among hobbyists, students, and developers. Specifications: Shaft Length: 7mm Shaft Diameter: 5.5mm Motor Size: 55 × 48 × 23mm Voltage Range: 3V – 12V DC No-load Current: 40 – 180mA Speed: 100 RPM @ 6V Torque: 0.35 kg-cm Key Features: Lightweight and compact design Cost-effective with injection-molded housing Resilient, shock-absorbing construction Low power consumption and minimal maintenance Quiet operation with reduced friction Corrosion-resistant for long life Easy mounting with pre-drilled holes Ideal For: DIY robotics and automation projects Line follower and obstacle-avoiding robots Educational robotics kits Small mechanical prototypes Package Includes: 1 × 100 RPM Single Shaft BO Motor (Straight Shaft)
GL-12 840 Points Solderless Breadboard
[Breadboard and Zero PCBs] A GL-12 840 Points Solderless Breadboard is an invaluable tool for experimenting with circuit designs whether in the R&D or university lab. A breadboard is used to make up temporary circuits for testing or to try out an idea. No soldering is required so it is easy to change connections and replace components. Parts will not be damaged so they will be available for re-use afterward. 840 Tie points – 128 Groups of 5 connected terminals, 8 Bus of 25 connected terminals Reusable for fast build a prototype of an electronic circuit – will accept transistors, diodes, LEDs, resistors, capacitors and virtually all types of components – No soldering required – Can modify or revise the circuits easily Fit for jumper wire of 0.8mm diameter – Standard 2.54mm hole spacing Adhesive sheet on the back side of the board – Multiple breadboards can be spliced together too. Features: 100% brand new and high quality Practical and useful Solderless breadboard with 840 points Completely reusable and have a self-adhesive back Easy component placement Package Includes: 1 x GL-12 840 Points Solderless Breadboard
Out of stockXT60 Female Plug Battery Connector Panel Mount Type
[Power Connector] The XT60E-F Female Plug Battery Connector is a reliable and high-performance panel mount power connector designed for high current applications up to 30A. Manufactured using high-temperature resistant nylon housing and gold-plated brass contacts, this connector ensures excellent electrical conductivity and durability even under demanding conditions. The XT60E-F panel mount design allows easy installation on battery enclosures, power distribution panels, and charging stations. Its mechanical mounting holes provide secure installation while the solder terminals allow convenient wiring with thick gauge cables up to 12 AWG. This connector is widely used in LiPo battery packs, RC models, drones, robotics, electric vehicles, power supplies, and DIY battery systems. The gold-plated contacts reduce resistance and improve current flow, ensuring stable and efficient power transfer. The XT60E-F connector is fully compatible with standard XT60 male connectors, making it a reliable solution for high-current power connections in professional and hobby electronics projects. ⭐ Key Features XT60E-F female panel mount connector High current capacity up to 30A Gold-plated brass contacts High temperature resistant nylon housing Secure panel mounting design Compatible with XT60 male connectors Supports wire sizes up to 12 AWG Ideal for LiPo batteries, RC models, drones and robotics 🔧 Technical Specifications Model: XT60E-F Connector Type: XT60 Female Panel Mount Rated Current: 30A Contact Material: Brass Contact Plating: Gold Plated Housing Material: High-Temperature Nylon Mounting Type: Panel Mount Orientation: Straight Compatible Wire Size: Up to 12 AWG 🎯 Applications LiPo battery packs RC cars and drones Electric vehicles and robotics Power distribution systems Battery chargers and adapters DIY battery projects 📦 Package Includes 1 × XT60E-F Female Plug Battery Connector (Panel Mount Type)
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.