RJ45 TCP/IP Remote Control Board w/ Integrated 8-CH Relay
250V/AC 10A / supports 485 networking
$45.66 FREE
DRF2657 RS232 to ZigBee Wireless Module
2.4GHz band
$34.48 FREE
KEYES Beginner Learning Kit for BBC Micro:Bit
STEM education programming kit for children
$39.81 FREE
DFRobot CO2 Gas Sensor Module for Arduino
authentic
$73.05 FREE
DFRobot 10 DOF Mems IMU Sensor Module for Arduino
authentic / ADXL345 accelerometer + ITG3200 gyro + HMC5883L compass + BMP085 pressure sensor
$38.36 FREE
DFRobot Flymaple-A Flight Controller w/ 10 DOF IMU for Arduino
authentic / ADXL345 accelerometer + ITG-3200 gyroscope + HMC5883L magnetometer + BMP085 barometric
$85.08 FREE
XH-M252 TDA8954TH Dual Chip Digital Audio Amplifier Board
2*420W amplifier power / left & right stereo dual channels
$39.63 FREE