This SSR series solid-state relay uses flame retardant engineering plastic shell, epoxy resin sealing compounds and thread exit wiring. It has the features of high structural strength and high resistance to impact and vibration as well as small driven current on the output side. This product can easily connect to computer terminals and various digital programmable circuit interfaces. What’s more, it has been widely applied in automatic control field, such as petroleum and chemical apparatus, CNC machines, fitness equipments and recreation facilities. As an ideal upgrading product of AC contactor, it is especially suitable for harsh conditions which is erosive and damp or conditions which requires explosion and dust proof and tolerance of switching on-off frequently. Technical Parameters Dimensions: 60x45x22.5mm (length x width x height) Shell material: reinforced ABS Weight: 105g Control mode: zero-crossing trigger Trigger current: 7.5mA/12V Control current: 3-25mA Control voltage: 3-32V (DC) Switching voltage: ON>2.4V,OFF