Feature:1. 1 CLICK DATA SWITCHING: This electric energy meter can display the measured AC voltage, current, time, power, energy, kWh. Red and green LEDs can help you easily obtain numbers. When the SAM CK key is pressed, the meter will switch to display the power factor, the corresponding red LED will light up based on the measurement results of cumulative time (h) and power (kWh).2. 1% MEASUREMENT ACCURACY: This single phase electric energy meter uses premium PC flame retardant materials and accuracy chips, which are safe to use. The accuracy is 1% 2 bits, and the measurement speed is 2 times/second.3. EASY TO USE: DIN rail AC voltage and ammeter can display AC voltage and current at the same time. If the current is below 99.9A, simply pass the wire through the hole on the right side of the instrument to obtain AC current.4. DATA STORAGE AND ZEROING: Data zeroing meets various measurement needs. When the meter displays energy, press and hold the SAM CK key for five seconds, and the meter will reset. Automatically save the electrical energy value and cumulative time electrical energy value after power outage. After reconnecting the measurement power supply, the instrument continues to accumulate data.5. WIDE APPLICATION: This AC power meter has a built in transformer in its guide rail, which can meet the maximum load current of 100A. It can be used in fields such as schools, shopping malls, homes, industry, laboratories, etc.Specification:Item Type: DIN Rail Power MeterMode: SDM004Material: PCMeasurement Accuracy: 1% 2 wordsDisplay: Voltage display 4 digit red 0.31 inch LED Nixie tube; The current and time cumulative display adopts 5 digits, and the red 0.31 inch LED Nixie tube has active power; Electric energy (electric degree) display adopts 5 bit, green 0.31 inch LED Nixie tubeAC Voltage: AC80-300VAC Current: AC0-100A (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 to 30000W (measured voltage AC80.0-300.0V), 0.0-45000W (AC200.0-450.0V)Electric Energy: 0.000 to 999999kwhTime Accumulation: 0.00 to 999.59hPower Factor: 1.000 to 0.000Measurement Speed: Approximately 2 times per secondInstallation Method: Track typeWorking Temperature: -10 to +60 Working Humidity: 10 to 80% (without condensation)Working pressure: 80 to 106kPaSunshine Exposure: No direct exposure1. 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 according to the wiring diagram in Figure 1, and the wires of the measurement circuit are threaded through the circular hole below the instrument. The direction of the wire penetration can be selected by the user according to the usage situation. The direction of penetration can be either from the circular hole below the instrument to the top or from the circular hole above the instrument to the bottom. Different directions of penetration 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, 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 (hold 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 have the function of 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 previously saved data..Package List:1 x Tester 1 x Manual