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Desktop Accessories Lightweight 24/20-pin Latching Button PC Bench Top ATX Breakout Board Module Adapter Computer Power Supply

XL6009 DC-DC Booster Power Supply Module Output is Adjustable Super LM2577 Step-Up Module DC DC Step Up Converter Boost Board

Foot pedal switch is momentary type which controls the power on or off.

Body Size : 10 x 6 x 3.5cm/3.9" x 2.4" x 1.4"(L*W*H)

PS2 Wireless Controller Game Pad Joystick 2.4G Handle Arduino Robot DIY Platform

Speaker 0.5watt 8ohm + Power Amplifier Music Player Module
Size: 34 x 21mm
Fixed hole: 3mm
Pitch: 15mm
Speaker power: 0.5W / 8Ω
Speaker diameter: 50mm
Amplifier chip: LM386
Voltage: 5V

SIM900A V3.8.2 Wireless Extension Module GSM GPRS Board with Antenna Kit
- Onboard two sets of power interface VCC5 5V power supply, VCC4 interface, 4.8-5.2V power supply, optional power supply self-start (default) and control start.- Onboard SMA (default) and IPXmini antenna interface, SIM900A interface retains reset.- The size of the module is 49 * 50mm, all new and original equipment.- The computer can power the early computer debugging USB module, and there is a very large amount of data under the recommended current of more than 1A.- You can set up dozens of MA data in standby to provide 10MA low power sleep and sleep.

 315Mhz RF Transmitter and Receiver Module link kit for Arduino/ARM/MCU/Raspberry pi

ESP8266EX ESP-01 Serial Wireless WiFi Transceiver Receiver Module 1MB SPI Flash DC3.0-3.6V Internet of Things WiFi Module Board Compatible with Arduino
Model: Esp-01.Compatible with Arduino. Support 3 modes: AP, STA, AP + STA

2.12.0.0

NRF24L01 2.4GHz Wireless RF Transceiver Module with NRF24L01 Socket Breakout Adapter 8 Pin Plate Board Breakout Adapter with on-Board 3.3V Regulator
NRF24L01 Wireless Transceiver Module: Built-in 2.4Ghz antenna: available software to set the address, only received local address when output data(Provide interrupt instruction), can be directly connected to a variety of microcontrollers. Compatible with Arduino and Raspberry Pi.

NRF24L01 Wireless Module Transceiver 2.4 GHz + SMA Antenna +  Breakout Adapter On-Board 3.3V Regulator - Arduino
【NRF24L01】is 2.4GHz ISM band transceiver for arduino, which has the abilities of auto-acknowledge and auto-retransmit and support up to six channels of data reception.
【NRF24L01】Includes on board support components and the RFX2401C which is the PA (Power Amplifier) and LNA (Low-Noise Amplifier)
【NRF24L01】The module has 5V tolerant inputs which allows for direct connection of SPI pins to the Arduino.
【Wireless Module】Small power on SMD LED indicator; On-board 3.3V voltage regulator accepts your Arduino +5V supply and provides 3.3V for the attached "NRF24L01+" module.

4 CH 315Mhz Key Wireless Remote Control KIT IC 2262/2272 Receiver Module

51 MCU development board STC89C52 learning board AVR minimum system AT89S51
1. Product Name: nh5100 development board
2. Main control chip: STC89C52
3. Crystal frequency: 11.0592m/12m