1. Over-voltage protection; Under-voltage protection; Over-current protection; Automatic 2. Voltage display(voltage measurement); Current display (current measurement) 3. Voltage calibration: Voltage +-10% adjustable. 4. settings: press the down button for more than 12s 5. Fault inquiry: Press the UP button from more than 12S Product Parameters: 1.Model number:TOVPD1-60- 2.Power supply:230VAC 50/60Hz 3.Max.Loading power:1~40A Adjustable(default:40A) 4.Over-voltage protection value range:230V~300~OFF(default:270V); Over-voltage voltage range:225V--295V(default:250V); Over-voltage protection action time:0.1s~30s(default value:0.5s); Over-voltage delay time:1s~500s(default:30s) 5.Under-voltage protection value range:140V--210V --OFF(default:170V); Under-voltage voltage range:145V--215V (default:190V); Under-voltage protection action time:0.1s~30s(default:0.5s); Under-voltage delay time:1s~500s(default:30s) 6.Over-current adjustment range:1-40A (default:20A); Over-current action range:0.1~30 second (default:0.5s); Over-currentrecovery delay time:1s~500s(default:30s) 7.Power-on delay time:1s~500s(default:10s) 8.Power consumption : less than 2W 9.Electric machinery life : 100,000 10.Installation:35mm DIN rail type: 40A colour: white Material: plastic Size: about 85x35x65mm Package Contents: 1 x Protective Device Protector Relay Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.