Description: 5V Omron solid state relay 240V 2A, output with resistive fuse 240V 2A Size: 53*32*23mm/2.08*1.31*0.9" Input Power: 5V DC (160mA) Input control signal voltage: Loe Level Trigger (0-2.5V state low relay ON) (3.3-5V state high relay OFF) Module interface: Input section: DC +: positive power supply (by relay voltage power supply) DC-: connect power negative CH: relay module signal to trigger the end (Low level trigger effective)