TOOGOO(R) 5V 2-Channel Relay Module Shield for Arduino ARM PIC AVR DSP Electronic Brand new and high quality Can be used with Arduino Special Sensor Shield V4.0 Be able to control various appliances and other equipments with large current Easy to be controlled by a lots of Microcontrollers like Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, PLC, TTL logic Just use 5v input signal to control