Functions:1.Over-voltage protection2.Under-voltage protection3.Automatic4. 63A 230V 50/60Hz Din Rail Adjustable Automatic Over And Under Voltage Protector Voltage Protective DeviceColor: whiteMaterial: plasticProduct Parameters:1.Model number:SVP-9122.Power supply:230VAC 50/60Hz3.Max.Loading power: 63A4.Over-voltage protection value range:221V~300~OFF(default:280V)Over-voltage voltage range:220V--299V(default:250V)Over-voltage protection action time:0.1s~10s(default value:0.1s)5.Under-voltage protection value range:219V--150V --OFF(default:160V)Under-voltage voltage range:151V--220V (default:180V)Under-voltage protection action time:0.1s~10s(default:0.1s)6. delay time:2s~512s(default:60s)7.Delay time after power-on:2s~255s(default:2s)8.Power consumption: Less than 2W9.Electric machinery life: 100,00010.Installation:35mm DIN rail: When you first connect the product, you have to wait about 1 , after the red light turn off, then the product will work.Package Contents:1 x Voltage RelayOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.