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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
USB to DC Jack Cable
USB to DC jack cable, useful for power-bank-driven projects.
5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal
[Power Connector] 🔌 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal (Male / Female) Standard DC Barrel Connector • 2-Pin Screw Terminal • Solder-Free Installation • Up to 5A Current Rating The 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal is a convenient and reliable connector designed for quick and secure DC power connections without soldering. Compatible with the industry-standard 5.5mm outer diameter and 2.1mm inner diameter barrel connector, it is widely used in CCTV camera installations, LED lighting, routers, power adapters, and DIY electronics projects. Available in Male and Female variants, this connector features a 2-pin screw terminal that allows wires to be connected easily using a screwdriver. The clearly marked positive (+) and negative (–) terminals help prevent wiring errors, making installation simple for both professionals and hobbyists. Manufactured with a durable ABS plastic housing and nickel-plated metal contacts, this connector provides reliable electrical performance, corrosion resistance, and long service life. Its reusable design makes it ideal for prototyping, repairs, and permanent installations. ⭐ Features Standard 5.5 × 2.1mm DC barrel connector Available in Male and Female versions 2-pin screw terminal for quick wire connection No soldering required Clearly marked positive (+) and negative (–) terminals Supports up to 5A current Durable ABS plastic housing Nickel-plated contacts for improved conductivity Secure and reusable connection Easy plug-and-play installation Suitable for 12V and 24V DC systems Ideal for DIY electronics and repair work 📋 Technical Specifications Product Type: DC Power Jack Plug with Screw Terminal Connector Type: Male / Female Barrel Size: 5.5mm (Outer) × 2.1mm (Inner) Terminal Type: 2-Pin Screw Terminal Rated Voltage: 0–30V DC Recommended Operating Voltage: 12V / 24V DC Maximum Current: Up to 5A Housing Material: ABS Plastic Contact Material: Nickel-Plated Metal Mounting Type: Inline Cable Mount Wire Compatibility: Up to 22 AWG Polarity Marking: Positive (+) / Negative (–) Operating Temperature: -20°C to +80°C 🔧 Applications Suitable for: CCTV Camera Power Connections LED Strip Lighting LED Sign Boards DC Power Adapters Routers and Modems Arduino Projects Raspberry Pi Projects DIY Electronics Battery Packs Power Distribution Systems Industrial Control Equipment Testing and Prototyping Electronic Repairs Low-Voltage DC Power Systems 📦 Package Includes 1 × 5.5 × 2.1mm DC Power Jack Plug with 2-Pin Screw Terminal (Male or Female variant as selected) ⚠️ Note Please select the required Male or Female connector variant before ordering. Verify polarity before connecting power to avoid damage to connected devices. Suitable for low-voltage DC applications only. Product appearance may vary slightly depending on the manufacturing batch.
Portable USB Bluetooth Audio Music Receiver Dongle Adapter – Wireless Audio Receiver
[Audio Receiver] The Portable USB Bluetooth Audio Music Receiver Dongle Adapter instantly converts any car stereo, home speaker, PC speakers, or audio system into a wireless Bluetooth-enabled music receiver. Simply plug the dongle into a USB power source, connect its audio output to AUX, and enjoy seamless wireless music streaming from your smartphone, tablet, or laptop. This compact Bluetooth receiver delivers crisp, high-quality audio with stable transmission—making it perfect for cars without built-in Bluetooth, wired speakers, home audio systems, and portable sound setups. It supports all Bluetooth-enabled devices and offers quick pairing, low power consumption, and wide compatibility. Whether you're upgrading your car audio or converting old speakers into wireless ones, this USB Bluetooth receiver provides an easy and affordable solution. ✅ Features Convert any speaker or car stereo into a Bluetooth audio receiver Provides high-quality wireless music streaming from mobile, tablet, or laptop USB-powered – plug into car charger, power bank, or USB port Stable Bluetooth connection with fast pairing Compatible with car stereos, home speakers, multimedia systems, and amplifiers Ultra-compact, lightweight, and easy to carry Supports all major Bluetooth audio devices No drivers required – plug & play operation **** 3.5mm jack or cable not included***** 📘 Specifications Device Type: USB Bluetooth Audio Receiver Bluetooth Version: Standard high-quality audio support Input Power: USB 5V Output: 3.5mm AUX audio Transmission Distance: Approx. 8–10 meters Compatibility: Android, iOS, laptops, tablets, car stereos, speakers, amplifiers Usage: Car audio upgrade, home audio wireless streaming, mobile speaker enhancement Design: Compact & portable
Out of stockHigh Quality Ultra Flexible 8 AWG Silicone Wire 1m (Red) + 1m (Black)
[Silicon Wire] Upgrade your high-power electronics projects with this High Quality Ultra Flexible 8 AWG Silicone Wire Set, including 1 meter Red + 1 meter Black. Made from premium tinned copper and heat-resistant silicone insulation, this wire offers exceptional flexibility, durability, and conductivity—perfect for high-current applications. The soft silicone jacket allows easy routing even in tight spaces, while providing superior heat resistance up to 200°C, making it ideal for RC vehicles, drones, robotics, lithium battery packs, inverters, chargers, ESCs, solar systems, and other high-load circuits. Whether you're building custom battery packs or upgrading your power wiring, this 8 AWG silicone wire provides low resistance, high amp handling, and long-lasting performance. Please find out our more cable and wires. Click here Note : 1 Qty = 1 Meter. Cable length will be continuous as per your ordered Qty. ⭐ Key Features Ultra Flexible 8 AWG Wire – Easy to bend and route in tight spaces Premium Silicone Insulation – Heat resistant, durable, oil-resistant and flame-retardant High Strand Count Tinned Copper – Superior conductivity & corrosion resistance High Current Handling – Suitable for heavy-load applications Includes: 1m Red + 1m Black silicone wire Low Resistance – Ensures efficient power transfer Perfect for RC, drones, battery packs, inverters, and ESC wiring 🔧 Typical Specifications Wire Gauge: 8 AWG Length: 1m Red + 1m Black Material: High-strand tinned copper Insulation: Soft silicone rubber Temperature Rating: Up to 200°C Voltage Rating: 600V (typical) Flexibility: Ultra soft, high bend endurance Package Includes : 1 x High Quality 8 AWG Silicone Wire 1m (Red) 1 x High Quality 8 AWG Silicone Wire 1m (Black)
Crocodile Alligator Clip 50 mm Black and Red
Description: An alligator clip, also called a spring clip, creates a temporary electrical connection using a simple mechanical design.It gets its name because the jaws resemble an alligator or crocodile’s mouth, opening and closing to grip objects securely.The clip works like a spring-loaded clothespin that uses tapered, serrated jaws to hold wires or metal parts tightly.A spring pushes the jaws together, allowing the clip to grip objects and maintain a reliable electrical connection.Manufacturers design these clips for electronics testing, enabling quick connections without soldering or permanent joints.One jaw usually connects to a wire by crimping or soldering for efficient current transfer.Some clips use a bent jaw forming the inner contact of a 15 mm to 4 mm female banana jack.This design allows a fast, non-permanent connection between test circuits and laboratory instruments.A plastic cover or boot surrounds the clip to prevent short circuits and protect users from accidental shocks.Engineers and students use these clips widely in testing, prototyping, and educational experiments. Applications: Technicians use small clips (15 mm–40 mm) in electrical laboratories, schools, and college labs for quick test connections.Large clips, called automotive clips or battery clamps, use solid copper for low resistance and strong current flow.Users connect these large clips with thick insulated copper cables between automobile batteries or heavy electrical systems.Hobbyists and professionals rely on these clips for safe, reusable, and efficient electrical connections. Product Example: Check the Crocodile Alligator Clip 50 mm – Red and Black, made from durable stainless steel with a protective plastic shroud.Its spring-loaded jaws open wide to grip different wire sizes securely during testing or circuit connection.The serrated teeth ensure a strong, slip-free grip that maintains stable electrical contact during operation. Package Includes: 1 × Crocodile Alligator Clip 50 mm (Black and Red)
Out of stock2.1 x 5.5 mm Male and Female DC Power Pigtail Connectors with 22CM wire
[Power Connector] DC Jack Male and Female Power Connector With Wire 5.5×2.1mm DC Jack, also known as a power jack, DC power jack, male jack, male plug, etc, is used to give external DC power to any device or board. It has a cylindrical miniature size. It is a perfect option to give direct external power to the board or any device. This product is known as CCTV Devices DC 5.5×2.1mm Male and female 2-Wire Lead Jack Power Cable Connector, 2.1mm Male and Female to 30cm Cable, 5.5X2.1mm 12V DC Power Plug Male and Female Jack Plug Cable, 5.5mm x 2.1mm DC Jack Connectors Power Extension Cable. Features/Specs: Material: PVC CCTV Camera power connection line Connector Type: 5.5mm X 2.1mm DC power jack: Male and Female To Pigtail Supports maximum current: 5A Voltage Rating: 3.3V to 24V Great for short-distance connection Simple & Professional appearance for cabling Easier for installation save time and money Easy to use Cable Length: 22cm(male and female each) Color: Black & Red Weight: 15gm Package Includes: 1 x 2.1 x 5.5 mm Male and Female DC Power Pigtail Connectors Note: Product Images are shown for illustrative purposes only and may differ from the actual product.
Blackboard VHM-314 Bluetooth 5.0 MP3 Decoder Board with Micro USB and 3.5mm Jack
[Audio Receiver] The Blackboard VHM-314 Bluetooth 5.0 MP3 Decoder Board, bundled with a Micro USB connection and a protective case, is a versatile and compact audio decoding solution designed for audio enthusiasts and DIY electronics projects. This decoder board integrates advanced Bluetooth 5.0 technology, providing a seamless and high-quality wireless audio streaming experience. Features: Easy to use Easy to connect Good quality product Specifications: Power Supply: 3.7-5V SNR: 90db THD+N: -70db Crosstalk: -86db DNR: 91db Support Profile: A2DP/avctp/AVDTP/AVRCP/HFP LOS: >15m Package Includes: 1 x Blackboard VHM-314 Bluetooth 5.0 MP3 Decoder Board with Micro USB and 3.5mm Jack
Out of stockBlack Plastic DC24V 20MM 12LED Air Humidifier Mist Maker Nebulizer
[Ultrasonic Sensor] This is a DC24V 20MM 12LED Alloy Air Humidifier Mist Maker Nebulizer. Buy this powerful DC 24V Ultrasonic Humidifier device suitable for atomization with a plate diameter of 10 mm. It is mostly in demand for fish pot and decoration purposes in households. It’s a simple plug-and-play module in which you just have to deep down the module in water and Supply 24 volt DC supply directly from the battery or power supply Adapter and it will start working. Additionally, this 24v 12 Colourful LED Ultrasonic Humidifier 12 LED Mist Maker Fogger comes with 12 Waterproof LED with 3 different colours glowing alternately which adds the colourful mist to your decoration The fully waterproof module has a 5mm DC female jack to connect the 24V input power supply with a 1-meter long cable. Instruction to use: Deep the module in the water keeping 4 to 5 cm water level above the device Connect the power supply of 24V DC 1AMP and enjoy the fog. Use power supply at least with 1AMP output for best performance Do not deep it in water more than 5cm for maximum fog output. How does it work? Ultrasonic Humidifier Piezoelectric Transmitter module works on the principle of cavitation produced by sound waves. Just provide the power supply it will turn into an ultimate ultrasonic atomizer. Features: Huge amount of humidification High-frequency vibration produces 350ml of mist per minute, humidifying all-day Wide Application Supporting use bonsai crafts, fish tank water tanks, DIY crafts and ect. Self-contained water level sensor Automatically power off with water shortage to prevent burning of the atomizer Package Includes: 1 x DC24V 20MM 12LED Ultrasonic Humidifier Mist Maker
Out of stockDigital Multimeter Small Yellow Color LCD AC DC Measuring Voltage Current
[Measuring Instruments] A multimeter or a multitester, also known as a VOM (Volt-Ohm meter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter would include basic features such as the ability to measure voltage, current, and resistance. Analog multimeters use a microammeter whose pointer moves over a scale calibrated for all the different measurements that can be made. Digital multimeters (DMM, DVOM) display the measured value in numerals, and may also display a bar of a length proportional to the quantity being measured. Digital multimeters are now far more common than analog ones, but analog multimeters are still preferable in some cases, for example when monitoring a rapidly-varying As the name suggests it is the multifunction device for all your testing need for daily work. When testing DC voltage, AC voltage, DC current, resistance, diode, buzzer, and battery, connect the red test lead to “VΩmA” jack and black test lead to “COM” jack, whereas When you need to test the current more than 200mA, connect the red test lead to “‘ 10A≡” jack and black test lead to “COM” jack. And When while testing the temperature, connect the temperature probe to “VΩmA” jack or “COM” jack. When testing the magnifying ratio of the transistor, turn the switch to hFE position and connect the transistor to the eight hole jack available in blue color. For the Square wave output, the frequency is 50Hz, the voltage is approximately 3Vp-p. The output jack is “VΩmA” and “COM” Description Table: Features : Small size makes it comfortable in many areas Brand new product. Good for newbies with basic knowledge of VI. No warranty on this product. No replacement or refund on this product Package Include: 1 x Digital Multimeter Small Yellow color and LCD display 2 x Measuring Probes(Red and Black)
Arduino Uno R3 CH340G ATMega328P Development Board Compatible with Arduino
[Arduino Boards, Development Board] Product Description The Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino. It is assembled with the CH340 USB to Serial converter chip, instead of using an Atmega16U2 chip. We have used plenty of these low-cost Arduino boards with CH340 chips, and have found them to work perfectly. The only time the CH340 chip is used is during programming and when using the serial output of the USB port. During normal operation, this board is identical to the more expensive version without CH340 chip. Features The Arduino Uno R3 is a micro-controller board base on the ATmega328 . It has 14 digital input/output pins (of which 6 can be used as PWM outputs); 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything need to support the micro-controller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get start. The Arduino Uno R3 differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) program as a USB-to-serial converter. Revision 2 of the Uno board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into DFU mode. Note: The Arduino Uno R3 reference design can use an Atmega8, 168, or 328, Current models use an ATmega328, but an Atmega8 is shown in the schematic for reference. The pin configuration is identical on all three processors. Package Includes 1 x Arduino Uno R3 CH340G ATMega328P Development Board
DC 24V 16mm Super Ultrasonic Mist Maker Humidifier Atomizer 12LED Alloy
[Ultrasonic Sensor] 24V Color Changing Humidifier Ultrasonic Mist Maker Water Pond Atomizer Air Humidifiers 12 LED Buy this powerful DC 24V Ultrasonic Humidifier device suitable for atomization with a plate diameter of 20 mm. It is mostly in demand for fish pot and decoration purposes in households. It’s a simple plug-and-play module in which you just have to deep down the module in water and Supply 24 volt DC supply directly from the battery or power supply Adapter and it will start working. Additionally, this 24v 12 Colourful LED Ultrasonic Humidifier 12 LED Mist Maker Fogger comes with 12 Waterproof LED with 3 different colours glowing alternately which adds the colourful mist to your decoration The fully waterproof module has a 5mm DC female jack to connect the 24V input power supply with a 1-meter long cable. Instruction to use: Deep the module in the water keeping 4 to 5 cm water level above the device Connect the power supply of 24V DC 1AMP and enjoy the fog. Use power supply at least with 1AMP output for best performance Do not deep it in water more than 5cm for maximum fog output. How does it work? Ultrasonic Humidifier Piezoelectric Transmitter module works on the principle of cavitation produced by sound waves. Just provide the power supply it will turn into an ultimate ultrasonic atomizer. Features: Huge amount of humidification High-frequency vibration produces 350ml of mist per minute, humidifying all-day Wide Application Supporting use bonsai crafts, fish tank water tanks, DIY crafts and ect. Self-contained water level sensor Automatically power off with water shortage to prevent burning of the atomizer Package Includes: 1 x DC24V 16MM 12LED Alloy Air Humidifier Mist Maker Nebulizer
USB Connector, USB Type A, USB 2.0, Receptacle, 4 Ways, PCB Mount
[USB Socket] This is a USB Type A Female Solder Jacks Connector PCB Socket. It complies with the Universal Serial Bus implementers forum. Multiple devices can be connected to this connector. Features: Durable. Robust. Supports USB 2.0 hardware. Package Includes: 1 x Amphenol USB Connector, USB Type A, USB 2.0, Receptacle, 4 Ways, PCB Mount
Unsoldered Nano V3.0 ATmega328P 5V 16MHz CH340 Type-C
[Arduino Boards] This Arduino-compatible Nano V3.0 micro-controller is a small, complete, micro-controller board based on the ATmega328 MCU. It has more or less the same functionality as the Arduino Duemilanove, but in a smaller package. It lacks only a DC power jack, and uses the more compact Mini USB (Mini-B) connector instead of a standard USB connector. It is compatible with Arduino programs and the Arduino IDE. This version of the Nano uses the CH340G USB interface controller. It can be powered via the Mini-B USB connection, a 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source. Features: CH340G USB bus converter chip replaces FT232RL Operating Voltage（logic level): 5V 8 analog inputs ports: A0 – A7 14 Digital input / output ports: TX, RX, D2 – D13 6 PWM ports: D3, D5, D6, D9, D10, D11 1 pair of TTL level serial transceiver ports: RX / TX Uses Atmel Atmega328P-AU MCU with bootloader installed Support USB download and Power over Mini-B Mini USB connector Recommended input voltage: 7V – 12V DC on pin 30 or 5V on pin 27 Maximum input voltage limits: 6V – 20V Supports ISP download Supplied with connector pins (headers), not soldered to the board for user flexibility Package Includes: 1 X Nano V3.0 16MHz CH340
DC Power Connectors Female Jack Panel Mount Bulkhead 5.5*2.1mm 2pin
[Power Connector] 🔌 DC 5.5 × 2.1mm Female Power Jack Socket Panel Mount Connector Panel Mount • 5A Current Rating • Silver-Plated Contacts • Durable & Reliable The DC 5.5 × 2.1mm Female Power Jack Socket is a high-quality panel mount DC power connector designed for reliable DC power connections in electronic equipment and DIY projects. It features a standard 5.5mm outer diameter and 2.1mm inner diameter, making it compatible with most DC power adapters and barrel plugs. The connector utilizes silver-plated copper alloy contacts to provide excellent electrical conductivity, low contact resistance, and outstanding corrosion resistance. The durable ABS plastic housing offers high mechanical strength and long-lasting performance, while the panel mount design ensures secure installation in enclosures, control panels, and electronic equipment. Designed for frequent use, the connector supports approximately 10,000 insertion and removal cycles, making it suitable for both commercial and industrial applications. ⭐ Features Standard 5.5 × 2.1mm DC female power jack Panel mount design for secure installation High-quality silver-plated copper alloy contacts Excellent electrical conductivity Low contact resistance High corrosion resistance Durable ABS plastic housing Long mechanical life (up to 10,000 insertion cycles) Easy solder or PCB connection Suitable for DC power applications up to 48V 📋 Technical Specifications Product Type: DC Power Jack Socket Connector Type: Female Barrel Size: 5.5mm × 2.1mm Mounting Type: Panel Mount / PCB Mount Installation Angle: Straight / Right Angle (Depending on Variant) Termination Type: Through Hole / Solder Contact Material: Silver-Plated Copper Alloy Housing Material: ABS Plastic Rated Voltage: 48V AC/DC Rated Current: 5A Insulation Resistance: Minimum 1000MΩ Dielectric Withstand Voltage: 500VAC Mechanical Life: Approx. 10,000 Mating Cycles Color: Black 🔧 Applications Suitable for: DC Power Supplies CCTV Cameras LED Lighting Systems Audio Equipment Video Equipment Communication Devices Arduino Projects Raspberry Pi Projects Robotics DIY Electronics Security Systems Computer Accessories Consumer Electronics Test Equipment Industrial Control Panels 📦 Package Includes 1 × DC 5.5 × 2.1mm Female Power Jack Socket Panel Mount Connector ⚠️ Note Compatible with standard 5.5 × 2.1mm DC barrel plugs. Product images are for reference only. The actual product may vary slightly depending on the manufacturing batch.
Banana Jack Plug Connector and Socket 4mm Male and Female (2 Pair)
[Terminal Connector] 4mm Banana Plug Connector Socket – Red & Black The 4mm Banana Plug Connector Socket Set is a high-quality electrical connector set designed for quick, convenient, secure, and reliable connections in electronic and electrical applications. The set includes red and black banana plug/socket connectors, making it easy to identify positive and negative connections. The 4mm banana plug design provides a secure electrical connection while allowing quick insertion and removal. It is suitable for speaker wires, test leads, power supplies, laboratory equipment, electronic testing, audio equipment, and automotive applications. ⭐ Key Features 4mm banana plug and socket connector Red and Black color combination Easy identification of positive and negative connections Quick and convenient connection Secure and reliable electrical contact Suitable for approximately 2mm–5mm diameter wire Easy to connect and disconnect Compact and reusable design Ideal for audio and electrical testing applications 📋 Technical Specifications Product Type: Banana Plug & Socket Connector Set Connector Size: 4mm Color: Red & Black Set Type: Plug + Socket Compatible Wire Diameter: Approx. 2mm–5mm Connection Type: Banana Plug / Socket Application: Electrical & Electronic Connections 🔧 Applications Power Supply Connections Audio Equipment Speaker Connections Electronic Test Equipment Laboratory Equipment Industrial Instruments Automotive Testing Multimeter Test Leads DIY Electronics Projects Electrical Prototyping 📦 Package Includes 1 × Red 4mm Banana Plug and Socket 1 × Black 4mm Banana Plug and Socket
Out of stockDC 24V 36mm Super Ultrasonic Mist Maker Humidifier Atomizer
[Ultrasonic Sensor] if you are wandering to make a device that is automatically used to increase room humidity levels by adding water vapor to the air. then this sensor is needed for you. This sensor works by transposing high-frequency sound waves into mechanical energy that is transferred into a liquid, creating standing waves. Buy this powerful DC 24V Ultrasonic Humidifier device suitable for atomization with a plate diameter of 10 mm. It is mostly in demand for fish pot and decoration purposes in households. It’s a simple plug-and-play module in which you just have to deep down the module in water and Supply 24 volt DC supply directly from the battery or power supply Adapter and it will start working. The fully waterproof module has a 5mm DC female jack to connect the input power source with a 1-meter long cable. Instruction to use: Deep the module in the water keeping 4 to 5 cm water level above the device Connect the power supply of 24V DC 1AMP and enjoy the fog. Use power supply at least with 1AMP output for best performance Do not deep it in water more than 5cm for maximum fog output. How does it work? Ultrasonic Humidifier Piezoelectric Transmitter module works on the principle of cavitation produced by sound waves. Just provide the power supply it will turn into a mini ultrasonic atomizer. Features: Plug and Play Device Fully waterproof and Shockproof 1-meter long cable provides ease for connections Universal 5 mm DC Female jack Low noise operation. Small fog particles. Long operation life. High stability. High Conversion Efficiency. Low Impedance Stable Waveform. Low Dielectric Loss. Strong Corrosion Resistance. Package Includes: 1 x DC 24V 36mm Super Ultrasonic Mist Maker Humidifier Atomizer
Out of stock5mm DC Jack Male Connector with Wire
[Power Connector] This is a DC Jack Connector with Wire – Male. It has many applications. It can be used for any 3 to 24 volt up to 5 Ampere applications. It can also be used to replace the damaged adapter cable 5mm dc male connector. Specifications: Cable Length: 10 cm Gender: Male Easy to use Flexible neck for longer life Package Includes: 1 x 5mm DC Jack Male Connector with wire
2.1×5.5mm DC Power Jack Socket Panel Mount (Female) 3Pin
[Power Connector] The 2.1 x 5.5mm DC Power Jack Socket Panel Mount Female Connector is a reliable and durable DC power socket designed for panel mounting in electronic equipment and enclosures. It accepts standard 2.1mm or 2.5mm center pin × 5.5mm outer diameter DC barrel plugs, making it compatible with a wide range of DC power adapters and supplies. Constructed with a high-quality insulating body and nickel-plated metal contacts, the socket provides excellent electrical conductivity, low contact resistance, and long service life. The supplied metal mounting nut ensures secure installation on control panels, project boxes, and equipment enclosures. The connector is suitable for DC power applications from 12V to 30V and is widely used in CCTV cameras, LED lighting systems, routers, battery chargers, DIY electronics, automation equipment, telecommunications, musical instruments, and embedded electronic projects. Its compact design, strong mechanical construction, and reliable electrical performance make it an excellent choice for professional and hobby electronics applications. 🔹 Key Features Standard 2.1 × 5.5mm DC barrel jack Female panel-mount connector Compatible with 2.1mm and 2.5mm center pin plugs Durable metal mounting nut included Nickel-plated contacts for low resistance Secure and reliable electrical connection Compact and lightweight design Easy panel installation Long service life Suitable for low-voltage DC applications 🔹 Technical Specifications Product Type: DC Power Jack Socket Connector Type: Female Connector Size: 2.1 × 5.5mm Compatible Plug Size: 2.1mm / 2.5mm × 5.5mm Mounting Type: Panel Mount Locking Method: Metal Threaded Nut Terminal Type: Solder Terminals Contact Material: Nickel-Plated Copper Alloy Housing Material: High-Quality Plastic Rated Voltage: Up to 30V DC Rated Current: Up to 5A Contact Resistance: Low Color: Black 🔹 Applications Suitable for: CCTV camera power input LED strip lighting DC power adapters Arduino projects Raspberry Pi projects Battery chargers DIY electronics Audio equipment Industrial control panels Communication equipment Test and measurement devices 🔹 Package Includes 1 × 2.1 × 5.5mm DC Power Jack Socket Panel Mount (Female) 1 × Metal Mounting Nut
Out of stockDC-005 5.5×2.1mm Female DC Power Jack Supply Socket -5Pcs.
[Power Connector] DC-005 Female DC Power Jack Supply Socket 5.5×2.1mm is a good quality power connector compatible with all 5.5 male power jack from different sources. It is 2.1×5.5mm PCB mountable jack widely used in DIY hobby projects as well as in many robotics application for DC supply voltage connection up to 30 V. Features: Temperature: -30°C ~ +70°C. Rated load: up to DC 30V / 1.0A. Withstand voltage: AC 500V (50Hz)/min. Actuating force: 3N – 20N. Package Includes: 5 x DC-005 5.5×2.1mm Female DC Power Jack Supply Socket -5Pcs.
DC Power Connector Male 5.5mm × 2.1mm Barrel Plug
[Power Connector] DC Power Connector Male 5.5mm × 2.1mm Barrel Plug 5.5×2.1mm DC Barrel Plug • Male Power Connector • Solder Type • Black Housing • DIY & Power Supply Applications The DC Power Connector Male 5.5mm × 2.1mm Barrel Plug is a reliable and easy-to-use connector designed for DC power supply, CCTV systems, LED lighting, routers, adapters, Arduino projects, and DIY electronics applications. Compatible with standard 5.5mm outer diameter and 2.1mm inner diameter DC barrel jacks, this connector provides a secure and stable power connection for low-voltage DC devices. The connector features a solder-type terminal design, allowing wires to be permanently connected for a durable electrical connection. The outer shell unscrews easily to expose the solder terminals and built-in strain relief, helping prevent cable damage and improving long-term reliability. Made from high-quality plastic and metal materials, this DC barrel plug is suitable for 6V to 30V DC applications up to 1A, making it ideal for custom power cables, electronics repairs, prototyping, and power distribution projects. ⭐ Features Standard 5.5mm × 2.1mm DC barrel plug Male connector Compatible with standard 5.5×2.1mm female DC jacks Solder-type terminals for secure wire connection Built-in strain relief for cable protection Durable plastic housing with metal contacts Easy assembly with screw-on outer shell Reliable and stable power connection Suitable for 6V–30V DC applications Compact and lightweight design Ideal for DIY electronics and power supply projects 📋 Technical Specifications Product Type: DC Power Barrel Plug Connector Type: Male Barrel Size: 5.5mm (Outer) × 2.1mm (Inner) Connection Type: Solder Terminal Voltage Rating: 6V–30V DC Current Rating: Up to 1A Polarity: Center Positive Compatible Housing Material: Plastic Contact Material: Metal Color: Black Mounting Type: Cable Mount 🔧 Applications DC Power Supplies CCTV Camera Installations LED Strip Lighting Routers and Modems Arduino and ESP32 Projects DIY Electronics Power Adapters Battery Packs Electronic Repairs Prototyping Robotics Projects Custom DC Power Cables Low-Voltage DC Systems 📦 Package Includes 1 × DC Power Connector Male 5.5mm × 2.1mm Barrel Plug ⚠️ Note Verify polarity before connecting power. Ensure solder joints are properly insulated. Not suitable for applications exceeding the rated current. Product appearance may vary slightly depending on the manufacturing batch.
Out of stockMale + Female 2.1*5.5mm for DC Power Jack Adapter Connector Plug For CCTV Camera
[Power Connector] This is Male + Female 2.1*5.5mm for DC Power Jack Adapter Connector Plug For CCTV Camera. Simple & Professional appearance for power cabling. Easier for camera installation saves time and assures secure cable connection. No electrical tap, No splicing, no crimping, but only a small screwdriver. Features: It is a perfect solution for those who want to make custom power cable. This CCTV Camera DC Power Connector will provide a great connection. Female Jack Description: 5.5mm x 2.1mm Female power plug connector. The external diameter of the plug: 5.5mm. The internal diameter of the plug: 2.1mm. Dimension: 38mm(L) x 14mm(W) x 13mm(H). Male jack Description: 2.1 x 5.5mm CCTV Camera DC Power Plug Connector. DC Power Plug with plastic construction and strain relief. This 2.1 x 5.5mm Power Plug features one power connector end DC plug male to another end terminal for CCTV camera connected. The internal diameter of the plug: 2.1mm The external diameter of the plug: 5.5mm Package Includes : 1 x Male + Female 2.1*5.5mm for DC Power Jack Adapter Connector Plug For CCTV Camera
Out of stockAD20P-1230C Ultra-Quiet DC 12V 3M 240L/H Brushless Submersible Water Pump with Cable 45cm
[DC Water Pump] A brushless dc pump is a 12v or 24v mini bldc motor drive dc water pump that uses magnetic force to rotate its impeller to pressurize and transport water for fluid lifting, booster, and circulation system. It is a kind of typical mechatronic product. You might be searching for a pump that operates on 12 V and gives an output of above 240L/H then this could be the best choice for your project. This Ultra-Quiet DC 12V 3M 240L/H Brushless Submersible Water Pump is a low-cost, small size Submersible Pump. It can take up to 240 liters per hour with a very low current consumption from 300mA. Just connect the tube pipe to the motor outlet, submerge it in water, and power it. The black color pump comes with a heavy-duty cable and a 5mm DC female jack at the end to connect directly to the 12V power supply. It is widely used in prototype projects as well as for decoration purposes. Features: Brand new and high quality. Brushless, permanent magnetic rotor. Super long working life(more than 30000 hours). Adopt high performance ceramic shaft. The axis is enclosed with static sealing, not dynamic, which can avoid leaking problems. Amphibious design. Submersible installation and entirely waterproof. low consumption Packages Includes: 1 x Brushless Submersible Water Pump
Out of stockATmel MCU ATMEGA16U2 MEGA 2560 R3 Improved Version CH340G Board
[Arduino Boards] The ATmel MCU ATMEGA16U2 MEGA 2560 R3 Improved Version CH340G Board is a micro-controller board base on the ATmega2560. It has a USB host interface to connect with Android based phones, base on the MAX3421e IC. It has 54 digital input/output pins (of which 15 can be used as PWM outputs); 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator; a USB connection, a power jack, an ICSP header, and a reset button. The MEGA ADK is base on the Mega 2560. Similar to the Mega 2560 and Uno, it features an ATmega8U2 program as a USB-to-serial converter. Revision 3 of the Mega ADK board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into DFU(Device Firmware Upgrade) mode. The board has the following new features: 1.0 pin-out: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In the future, shields will be compatible both with the board that uses the AVR, which operate with 5V and with the Arduino Due which operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes. Stronger RESET circuit. The Mega Arduino R3 Android Accessory Development Kit (ADK) can be powered via a USB connection or with an external power supply. The power source is selected automatically. External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm centre-positive plug into the board’s power jack. Leads from a battery can be inserted in the GND and Vin pin headers of the POWER connector. Because the Mega R3 Android Accessory Development Kit (ADK) is a USB Host, the phone will attempt to draw power from it when it needs to charge. When the ADK is powered over USB, 500mA total is available for the phone and board. Package Includes : 1 x Mega R3 Android Accessory Development Kit (ADK) board.