Function: 1 . Supports overvoltage protection, undervoltage protection and voltage display, also supports voltage measurement. 2. Both the overvoltage and undervoltage protection values and the recovery values as well as the overvoltage and undervoltage protection duration are adjustable. 3. The failback delay and the turn-on delay time can be adjusted, as can the turn-on delay time. 4. Support reset mode selection, fault inquiry and factory reset function can bring you more convenience. 5 . High-quality plastic material, hard, durable, corrosion-resistant, and also has a long service life. Specification: Item Type: Under Over Voltage Protection Material: plastic Color: as shown in the picture Optional specification: 63A, 80A Model: SVP-912 Whole Product Size: Approx. 35 x 85 x 65mm or 1.4 x 3.3 x 2.6 inches Rated voltage: 230VAC 50Hz Rated current : 1-40A adjustable 1-63A adjustable 1-80A adjustable Undervoltage protection value: 219V-150V-OFF (adjustable) Over-voltage protection value: 221V-300V-OFF (adjustable) Recovery delay time: 2-512s Boot delay time: 2-255s Disconnecting capacity: Over voltage: 221-300V Undervoltage: 219-150V (adjustable) Functions: 1 . Overvoltage protection 2. Undervoltage protection 3. Voltage display (voltage measurement) 4. The surge protection value is adjustable 5 . The overvoltage recovery value is adjustable 6. The operating time of the overvoltage protection is adjustable 7 . Adjustable undervoltage protection value 8. Adjustable undervoltage recovery value 9. The undervoltage protection duration is adjustable 10. Adjustable disaster recovery delay time 11 . Adjustable turn-on time after power on 12. Reset method selection 13 . Troubleshooting 14 . Restore factory settings Package List: 1x Under Over Voltage Protection 1 x English Manual