DC 5V 4 Channel Relay Module with Optocoupler For Arduino ARM MCU AVR DSP
5V Relay Module 4-Channel. This is a 5V 4-Channel Relay interface board. 5V 4-Channel Relay interface board, and each one needs 50-60mA Driver Current. Equiped with high-current relay, AC250V 10A ; DC30V 10A.