This is a 5V 2-Channel Relay module can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM and MSP430. Features Each 5V Relay need 20mA driving current. 5V TTL control input which can be directly controlled by Arduino, AVR, PIC, ARM and others. LED indicator status for each Relay's More information about the ARDUINO programming languaje, learning guides, FAQ, downloads, specifications, application examples, etc. can be obtained in arduino.cc/en official website.
