... meter reading: Volts, Current, Watts, Frequency, Power Factor, etc Power Meter,Power Monitor(American Style)1.The LCD shows all meter reading: Volts, Current, Watts, Frequency, Power Factor, and ... to display the Voltage then press key for 3sec. to display the cumulative time since power was applied to ... Press Amp Key once for output current(Amps) display, press key for 3 sec to set the limit to power, ...