ITEM NAME:1 pcs Four way Solid State Relay Module For Arduino W3Y5 1 pcs Four way Solid State Relay Module For Arduino W3Y5 5V Omron solid state relays 240V / 2A, output with resistive fuse 240V / 2A. Dimensions: 57x55x25 (length x width x height) Input Power: 5VDC Control signal input voltage: (0-2.5V low state relay ON) (3-5V state high relay OFF) colour: black + red Material: plastic Voltage: 5V Quiescent current: 0 mA Operating current: 12.5mA Trigger Voltage: 3.3-5V Trigger current: 2mA DC +: positive power supply (according to the relay voltage supply) DC-: negative power supply CH1: relay module signal triggering end (high to trigger active) CH2: relay module signal triggering end (high to trigger active) CH3: relay module signal triggering end (high to trigger active) CH4: relay module signal triggering end (high to trigger active) Package included: 1 x Four way Solid State Relay Module For Arduino Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.