GEREE 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM Equipped 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. ApplicationSupports all MCU control, The industrial field, PLC control, Smart home control. GEREE 4 Channel DC 5V Relay Module warranty--30-Day Money Back Guarantee -- 12 Month Replacement Warranty -- Lifetime Support Guarantee