1-2-4-6-8 Channel 5V Relay Module Optocoupler LED Board For Arduino ARM AVR

1 CH With Optocoupler(Black). 2 CH With Optocoupler(Black). 4 CH With Optocoupler(Blue). 6 CH With Optocoupler(Blue). (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). (8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).

eBay