ITEM NAME:1pcs 5V DC 4 Channel SSR 2A Solid-State Relay module High Level for arduino New 100% brand new and high quality Description: 5V Omron solid state relay 240V 2A, output with resistive fuse 240V 2A Size: 57*55*25mm/2.24*2.16*0.98†Input Power: 5V DC (160mA) Input control signal voltage: (0-2.5V state low relay OFF) (3.3-5V state high relay ON) Module interface: Input section: DC +: positive power supply (by relay voltage power supply) DC-: connect power negative CH1: 1 relay module signal to trigger the end (high level trigger effective) CH2: 2-channel relay module signal to trigger the end (high level trigger effective) CH3: 3 relay module signal to trigger the end (high level trigger effective) 1 x Solid State Relay Module.5V Omron solid state relay 240V 2A, output with resistive fuse 240V 2A. Input Power: 5V DC (160mA). CH1: 1 relay module signal to trigger the end (high level trigger effective). CH2: 2-channel relay module signal to trigger the end (high level trigger effective).