A module includes 4 relays 5V with Terminal Blocks for both Input and Output Interface Each relay supports Normally Open and Normally Closed and Optocoupler Isolation. Each relay supports High-level Trigger or Low-Level Trigger selectable by a jumper. Relay for Arduino, ESP32, ESP8266, Raspberry Pi, or any 5V or 3.3V microcontroller. Tutorials for Arduino is provided.

Alkaline battery made by Toshiba

A57 BT Bluetooth Temperature-Humidity Datalogger uses low-power microprocessors, equips internal temperature sensor and measures temperature and humidity via connecting external temperature probe or temperature-humidity probe. It features high accuracy, large storage, LED audible and visible alarm, APP and PC software connection, report export, etc. It is widely used in fields of food processing, cold-chain transportation, warehousing, etc.

AA R6 CAMELION Carbon Zinc Battery

Current sensor chip: ACS712ELC-30A Pin 5V power supply, on-board power indicator The module can measure the positive and negative 20 amps, corresponding to the analog output 100mV / A There is no the detection current through, the output voltage is VCC / 2

Voltage: 3.3-5V Pressure: 0-40KPa Module Adopts High Precision AD Sampling Chip and 0-40KPa Air Pressure Sensor Module Can Connect 2.5mm Soft Tube and Detect the Water Level and Other Air Pressure Adopts 5K Ohm Resistor Bridge Sensor The Specific Air Pressure Value needs to be Calculated Size: 18.6*13.5mm (2mm fixing hole)

The Mega is 100% compatible with Arduino IDE and most shields designed for the Arduino mega R3，RoHS Compliant The chip is Atmega+2560-16au and 16u2, same with the official version. Improved and expert version: 1. 0 pinout: 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 future, shields will be compatible both with the board that use the AVR, which operate with 5V and with the Due that operate with 3. 3V. The second one is a not connected pin, that is reserved for future purposes. Stronger RESET circuit. Use 5. 5 * 2. 1mm DC barrel jack (compatible with 5. 5 * 2. 5mm DC barrel jack) It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.

Compact and Powerful – The Arduino Nano [A000005] is a small yet powerful microcontroller based on the ATmega328P, making it perfect for projects with limited space. Its compact design allows for easy integration into embedded systems, wearables, and portable applications without compromising performance. Versatile I/O Options – Equipped with 14 digital I/O pins, 8 analog inputs, and PWM support, the Nano enables precise control of components such as sensors, motors, and LEDs. This versatility makes it ideal for robotics, automation, and interactive projects requiring multiple inputs and outputs. Easy USB Connectivity – The built-in mini-USB port allows quick and hassle-free programming, as well as power supply without additional components. It simplifies prototyping and development, making it easy to upload sketches, communicate with the board, and integrate with other devices. Arduino IDE Compatibility – Fully compatible with the Arduino IDE, the Nano supports a vast library of pre-written code, examples, and community projects. This makes it accessible for beginners while offering advanced users the flexibility to develop custom applications with ease. Ideal for Prototyping & IoT – Perfect for makers, students, and engineers, the Arduino Nano is widely used in IoT applications, robotics, and embedded systems. Its small size and powerful features make it a great choice for prototyping, experimentation, and building compact, high-performance devices.

ATmega328P Microcontroller: Powered by the reliable ATmega328P, running at 16 MHz with 32KB of flash memory, 2KB SRAM, and 1KB EEPROM, offering ample resources for a wide range of basic to advanced electronics projects. 14 Digital I/O Pins & 6 Analog Inputs: Features 14 digital I/O pins (6 of which support PWM output) and 6 analog inputs (10-bit resolution), providing flexible options for sensors, motors, and other external components. USB Connectivity for Easy Programming: The built-in USB port allows for direct programming and serial communication, enabling a simple connection to your computer for sketch uploading and debugging through the Arduino IDE. Compatible with Arduino IDE: Full compatibility with the Arduino IDE ensures easy access to a vast array of libraries, code examples, and community-driven projects, making the Uno a great choice for both beginners and experienced makers. Widely Used in Education & Prototyping: The Arduino Uno is a standard in educational environments, widely used for learning and teaching electronics and programming. It's perfect for prototyping, robotics, IoT projects, and more.

ATEN AT-E210D Anti-Static Solder Pump is a must-have tool for efficient and safe desoldering. Designed for professionals, hobbyists, and students, this high-quality pump delivers reliable performance across various applications, from complex printed circuit repairs to basic solder extraction tasks. Its anti-static design ensures the safety of sensitive electronic components, making it an excellent choice for laboratories, workshops and educational environments. The ergonomic and lightweight design promotes ease of use, allowing for extended use without discomfort. The ATTEN AT-E210D is built from durable materials to withstand rigorous use while maintaining optimal performance. Whether you are working on professional repairs or DIY projects, the AT-E210D AT-E210D welding pump delivers precision and reliability. Backed by ATEN's commitment to excellence, this tool is a valuable addition to any electronic repair kit.

This Industrial grade soldering device has an in-line suction nozzle delivering strong suction making it quick and easy to clean solder residue. Features of the ATTEN AT-E330A Desoldering Pump include Air leakage protection, precise and sturdy design, Stainless steel spring and non-slip handle. Its Double oil seal design is easy to clean.

High technology: Relay+ Microprocessor control(CPU) system Power: 10000VA Wide input voltage: 140~260VAC Fashion design: Intelligent LED display High efficiency: More than 90% Protection: Over-voltage,under-voltage,over-load, short circuit, over temperature, time delay etc.

High technology: Relay+ Microprocessor control(CPU) system Power: 1000VA Wide input voltage: 140~260VAC Fashion design: Intelligent LED display High efficiency: More than 90% Protection: Over-voltage,under-voltage,over-load, short circuit, over temperature, time delay etc.

High technology: Relay+ Microprocessor control(CPU) system Power: 12000VA Wide input voltage: 140~260VAC Fashion design: Intelligent LED display High efficiency: More than 90% Protection: Over-voltage,under-voltage,over-load, short circuit, over temperature, time delay etc.

High technology: Relay+ Microprocessor control(CPU) system Power: 15000VA Wide input voltage: 140~260VAC Fashion design: Intelligent LED display High efficiency: More than 90% Protection: Over-voltage,under-voltage,over-load, short circuit, over temperature, time delay etc.

High technology: Relay+ Microprocessor control(CPU) system Power: 5000VA Wide input voltage: 140~260VAC Fashion design: Intelligent LED display High efficiency: More than 90% Protection: Over-voltage,under-voltage,over-load, short circuit, over temperature, time delay etc.

USB MEMORY CARD DIRECT PLAYBACK: The amp with U disk and memory card direct reading function, allowing you to copy your favorite music to a USB disk or memory card for playback. BLUETOOTH 5.0 TECHNOLOGY: Utilizing advanced Bluetooth 5.0 transfer, this amplifier offers stable signals and an extended range. Experience seamless connectivity for all your wireless sound needs. POWERFUL SOUND OUTPUT: Utilizes a powerful amplifier chip, delivering a maximum output power of 80W+80W, providing clean and clear sound without any audible noise even at high volume levels. WIDE COMPATIBILITY: Supports 4 6 8 16 ohm passive speakers, allowing connection to various devices such as smartphones, computers, tablets, laptops, MP3 players, TVs with AV or 3.5mm headphone output, and more. VERSATILE INPUTS: Features sound input options including 3.5mm stereo input, memory card, U disk USB sound input, ensuring easy connection to different devices for a seamless sound experience.

Voice Coil for DU-100/120 Driver Unit Original Crown Replacement Parts 66mm Diameter Guaranteed High Quality Very high quality

Original Axiom DU-150 Coil DU150 Replacement Coil 150 for 150 watts Driver Unit Coil diameter 51.6 PA Driver Unit Coil - Public Address Replacement Coil - For 150 watts Driver Unit Coil only 16 ohms - Inner Coil Diameter 51.6 - Original made by Axiom, Taiwan

100 Watts 16 ohms Speaker Compression Driver Unit – 160Hz – 8KHz Frequency, Mid Range Tweeter Unit with Aluminum Body, High Temperature Voice Coil and Neodymium Diaphragm Screw on Type. * 100 Watts Peak Power Handling – Sensitivity (1w/1m): 115dB * Mid-range / Tweeter Driver Unit – 1.5” (35mm) Flat Aluminum Voice Coil – Neodymium * Diaphragm * Fits Horns with 1 3/8″ x 18 TPI Threads * Frequency response: 160Hz-8KHz, 16 Ohm Impedance