UP

-      In normal status sequence change (voltage?current?kilowatt hour?power?working time)

-      In the status of kilowatt hour and running time, the exit cleared status.

DOWN

-      In normal status reverse change (working time?power?Kilowatt hour?current?voltage)

-      In the status of kilowatt hour and running time, the exit cleared state.

SET

-      In the status of kilowatt hour and working time, press 3 seconds enter cleared status.

OK

-      In normal status press to turn ON or OFF the backlight.

-      In the status of kilowatt hour and working time, cleared kilowatt hour or working time and the exit cleared status.