5V 1/2/4/6/8/16 Channel Relay Module Optocoupler Board LED for Arduino ARM AVR
1CH without Optocoupler. 16CH without Optocoupler. 1CH without Optocoupler High. 1PC Relay Module with Optocoupler. Each channel has an LED indicator to show the relay is on. Channels: 1,2,4,6,8,16. Switching Capacity: 10A.