This is a 5V 4-Channel Relay interface board. Be able to control various appliances, and other equipment with large currents. It can be controlled directly by Micro-controller (Raspberry Pi, Arduino, etc.). Features 5V 4-Channel Relay interface board, each needs 15-20mA Driver Current Equipped with high-current relay, AC250V 10A ; DC30V 10A Standard interface that can be controlled directly by micro-controllers Opto-isolated inputs 8550 transistor drive Indication LED’s for Relay output status Fixed bolt holes for easy installation Small board PCB size: 7.2 cm * 4.8 cm Weight： approx. 60 g Resources Schematic link from manufacturer
