Equiped with high-current relay, AC250V 10A ; DC30V 10A 5V 4-Channel Relay interface board, and each one needs 50-60mA Driver Current Be able to control various appliances, and other equipments with large current Application：Supports all MCU control, The industrial field, PLC control, Smart home control Indication LED's for Relay output status 5V Relay Module 4-ChannelThis is a 5V 4-Channel Relay interface board. It can be controlled directly by Micro-controller (Raspberry Pi, Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)