Tomzn Socket voltage Protector 16A

Functions: Power on delay Time 1. Over-voltage protection 2. Under-voltage protection 3. Over-current protection 4. Automatic recovery 5. Voltage display 6. Current display  7. Voltage calibration: Voltage -9.5% adjustable. 8. Restore factory settings: press the down button for more than 12sec 9. Fault inquiry: Press the UP button from more than 12Sec