ITEM NAME:1pcs 5v 2 Channel OMRON SSR G3MB-202P Solid State Relay Module For Arduino G3T5 1pcs 5v 2 Channel OMRON SSR G3MB-202P Solid State Relay Module For Arduino G3T5 Size: 55 * 33 * 25 (L * W * H) Input Power: 5V DC (160MA) Input control signal voltage: (0-2.5V state low relay OFF) ï ¼Å’ (3.3-5V state high relay ON) 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 (high level trigger effective) Package include: 1X Solid state relay modules 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 +/- 1-3 cm..Input Power: 5V DC (160MA). CH: Relay module signal to trigger the end (high level trigger effective). (3.3-5V state high relay ON). Module interface.