ITEM NAME:20A AC LCD Digital Power Meter Monitor Volt KWh Time Watt Voltmeter Ammeter Description: Electrical parameter measurement function: voltage, current, active power, energy. Running time function: records the load accumulated operating time. Overload alarm function: over power alarm threshold backlight flashing to alarm. Power alarm threshold preset function: can set power alarm threshold. The reset function of energy and running time. Store data when power off(store the accumulated energy, running time, display items, the state of backlight on or off. Large-screen LCD with backlight for displaying voltage, current, energy, active power, the accumulated running time. Specification: Display: LCD Backlight Working Voltage: 80~270V AC Test Voltage: 80~270V AC Rated Power: 20A/4400W Max. Power of the Overload Threshold: 9999W Operating Frequency: 45~65Hz Measurement Accuracy: 1.0 Grade Package Includes: 1 * AC 20A Digital LCD Power Meter Note: 1. This module is suitable for indoor use, please do not use in outdoor. 2. Applied load should not exceed the rated power. 3. Wiring order can't be wrong..Overload alarm function: over power alarm threshold backlight flashing to alarm. Display: LCD Backlight. Power alarm threshold preset function: can set power alarm threshold. Rated Power: 20A/4400W.