Real time display of working voltage for automatic leakage reclosing

（1） Check the current voltage, current, and other daily display of the machine. Short press the "up/switch" button to sequentially view the current, current leakage value, and current voltage. （2） Long press the "Set/Query" button for 5 seconds to set various parameters. The machine will enter the parameter setting interface from the main interface. Short press the "Set/Query" button to view the set overvoltage value, undervoltage value, overcurrent value, leakage value, and delay protection time. Press the "up" and "down" keys to adjust various values. If there is no operation for 10 seconds, it will be automatically saved and returned to the main interface. （3） Short press the "Set/Query" button to view the number of overvoltage, undervoltage, overcurrent, and leakage faults in sequence. If there is no operation for 10 seconds, it will automatically return to the main interface.

（4） Press the "down/mute" button to silence the alarm sound; When an alarm occurs, press the "down/mute" button to mute it. （5） Press the "T" key to perform a leakage test, and make a "beep" sound to indicate that the circuit is normal.