AC 22000W 250V 100A Digital Voltage Meters Power Energy Voltmeter Ammeter Indicator Current Amps Volt Wattmeter PF Frequency Tester Detector Feature: Can display voltage , current , power , power factor , energy and frequency at the same time Made of PC flam retardant material , which will be more safe for using ,Backlight control Read more about AC 22000W 250V 100A Digital Voltage Meters Power Energy Voltmeter Ammeter Indicator Current Amps Volt Wattmeter PF Frequency Tester Detector[…]

AC220V 20A Digital Voltage Meter Energy Meter LCD 5KW Power Voltmeter Ammeter Current Amps watt PF Frequency meter tester detector indicator Active Power Calculation Description Active power is calculated as: P = U I cos, cos represents the power factor, purely resistive loads (such as incandescent, heater, etc.) the power factor is generally close to Read more about AC220V 20A Digital Voltage Meter Energy Meter LCD 5KW Power Voltmeter Ammeter Current Amps watt PF Frequency meter tester detector indicator[…]