1、Overvoltage protection, undervoltage protection and voltage display (voltage measurement). 2、The overvoltage protection and overvoltage recovery value can be adjusted, and the overvoltage protection action time can be adjusted. 3、The undervoltage protection value and the undervoltage recovery value can be adjusted, and the action time of the undervoltage protection can be adjusted. 4、Failover delay time and power‑on delay time of the device are adjustable. 5、Reset mode selection, fault query and factory reset functions of the voltage protection device. Condition: 100% Brand New Material: Plastic Model: SVP - 916 Rated Current: 1-40A adjustable 1-63A adjustable 1-80A adjustable Undervoltage Protection Value: 219V-150V-OFF (adjustable) Overvoltage Protection Value: 221V-300V-OFF (adjustable) Recovery Delay: 2-512s Startup Delay Time: 2-255s Product Features: 1. Overvoltage protection 2. Undervoltage protection 4. Overvoltage protection value can be adjusted 5. The recovery value of overvoltage can be adjusted 6. Overvoltage protection action time can be adjusted 7. The undervoltage protection value can be adjusted 8. The recovery value of undervoltage can be adjusted 10. The delay time of fault recovery can be adjusted 11. Power on delay turn on time is adjustable 12. Selection of reset mode 13. Fault query 14. Restore factory Settings Size: As Pictures Show 1 x Voltage Protection Device 1 x Manual