ITEM NAME:5V 4 Channel Relay Board Module With Optocoupler LED for Arduino PiC ARM Nw.This is a 5V 4-Channel Relay interface board. 5V 4-Channel Relay interface board, and each one needs 50-60mA Driver Current. Indication LED’s for Relay output status. Equiped with high-current relay, AC250V 10A ; DC30V 10A.