❃❃ Digital Voltage Measuring Instrument,Single Phase Energy Meter Electricity Usage Monitor,AC 40-300V,100A, Built-in CT Kwh Voltage Current Frequency Guide Rail Type Electric Meter- 2pack ❃❃Ac power meter voltage measuring range is AC 40-300V, current measuring range is 0-100A, active power range is 0-450000W, electric energy range is 0-99999kWh. Frequence:45.0Hz-65.0Hz,Power Factor:0.00-1.00PF ❃❃Applicable to the chemical industry, power plant, automation equipment, DOS system, electromechanical equipment and other places. and widely used in school, market, home, industry, laboratory, etc. Notes: This energy meter can be used to measure non-standard sine wave from inverter. ❃❃1. when power off, the electric energy data will be stored and memorized, when the power is reconnected, this watt meter will go on cumulating data. 2. Data reset for multiple measurement needs. Press the reset button for five seconds, the kwh usage meter will be reseted. ❃❃Colorful LCD HD display, 178° viewing without dead angle, with backlight function, this ac power meter single phase is clearly visible whatever day or night. Specification: Item Type: Watt‑Hour Meter Model: D52-2066 Material: ABS Measurement Accuracy: 1%±2 Words Measuring Range: AC Voltage: AC40.0-300.0V, AC Current: AC0-100.0A Current Display Resolution: 0.01A Power Frequency: 45.0Hz-65.0Hz Power Factor: 0.00-1.00PF Measurement Speed: about 2 times per second Installation Method: Rail Type How to Use: 1. Connect the measured voltage to the 1 and 2 terminals on the bottom left of the meter. 2. The built‑in transformer is wired according to the wiring diagram in Figure 1, and the wire of the measurement loop is passed through the hole under the meter. The penetration direction of the wire is arbitrarily selected by the user according to the situation of use. Or penetrate from the circular hole on the top of the meter and come out from the bottom. 3. Connect the external transformer according to the wiring diagram in Figure 2, connect the 2 wires of the secondary end of the accurate current transformer with the meter to the 3 and 4 terminals on the upper left of the meter, and pass the wires of the measurement circuit through the mutual inductance. 4. The meter displays the measurement parameters after the power is turned on. 5. When it is necessary to reset the energy measurement (when measuring from 0), press and hold the button (RESET) on the right side of the instrument panel for 5 seconds (press and hold for 5 seconds) until the energy display is 0, release the button, At this time, the electrical energy is measured from 0. Package List: 2 x Smart Watt-Hour Meter 2 x Manual