Digital Power Meter Energy Monitor Voltage Current Power Frequency Tester AC 80‑300V 0‑100A Item Type: Digital Power Meter Model: SDM006 Material: PC Measurement Accuracy: 1% ± 2 digit. Display: 4pcs 0.32in red LED for AC voltage and power factor, 4pcs 0.32in red LED for active power and power frequency, and 5pcs 0.32in green LED for electrical energy. AC Voltage: AC 80-300V AC Current: AC 0-100A, the current display resolution is 0.01A when the measured current is less than 100A, 0.1A when the measured current is greater than 100A, and the range automatically switches. Active Power: 0.0-30000W of AC 80.0-300.0V measured voltage. Electric Energy: 0.000-999999kwh Power Frequency: 45.00-65.00 Hz Power Factor: 1.000-0.000 Measurement Speed: 2 times per second. Installation: DIN Rail Type Working Temperature: -10℃ ~ +60℃ Working Humidity: 10~80%, no condensation. Working Pressure: 80-106kPa How e: 1. Connect the measured voltage to the 1 and 2 wiring terminals at the bottom left of the instrument. 2. The built in transformer is wired, and the wires of the measurement circuit are threaded through the round hole below the instrument. The direction of the wiring can be selected by the user according to the usage situation. The direction of wiring can be either from the round hole below the instrument to the top or from the round hole above the instrument to the bottom. Different directions of wiring will not affect the measurement results. 3. After turning on the power, the measurement display functions displayed on the instrument are voltage V, current A, and active power W. The red LED indicator on the right side of the corresponding display window lights up to indicate the corresponding display function. 4. Press the button SAM CK on the right side of the dashboard to convert the three displayed functions into power factor cos Φ, time accumulation h, electrical energy kWh, the green LED indicator light on the right side of the corresponding display window lights up, indicating the corresponding display function. 5. Press the button SAM CK again, and the display function of the instrument will be converted back to voltage V, current A, and active power W. 6. When it is necessary to reset the electrical energy measurement and timing, when measuring from 0, switch the measurement function to the electrical energy measurement function, and the green indicator light on the right side of the instrument display will light up. At this time, press and hold the button SAM CK for 5 seconds, until both the electrical energy and timing display are displayed as 0. Release the button, and both the electrical energy and timing display will start measuring from 0. Both the electric energy and timing displays can automatically saving data during power outages, that is, when the measurement voltage is disconnected or powered off, the instrument will automatically save the current test data. When the measurement power is reconnected, the instrument will continue to accumulate the saved data. No exposure to direct sunshine.