Kuman 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM K49 Be able to control various appliances, and other equipment with large current Equiped with high-current relay, AC250V 10A ; DC30V 10A 5V 4-Channel Relay interface board, and each one needs 50-60mA Driver Current Application:Supports all MCU control, The industrial field, PLC control, Smart home control Indication LED's for Relay output status