Specifications:1. LCD color display, genuine color screen, 178-degree wide viewing angle 2. Measures AC voltage, current, power, electricity, frequency, and power factor (6 main functions) 3. The power (Kwh) has a memory function, and the accumulated current consumption is cleared after long-pressing the round hole on the side of the meter for 5 seconds. 4. Frequently used in measurement application industries, chemical industry, power plants, automation equipment, DOS systems, electromechanical equipment, and other locations. 5. Easy to use, provides wiring diagram 6. Display colors: red, orange, yellow, white, green, and blue The digital multifunctional meter can simultaneously measure and display 6 parameters: AC voltage, AC current, active power, power factor, frequency, and electrical energy. Instrument's display section uses a high-resolution LCD color screen. Main specifications 1. Measurement accuracy: 1 % 2. Measurement range: AC voltage: AC50.0-300.0V (or AC250.0-450.0V can be customized as needed), AC current: 0-99.99A, current display resolution is 0.01A, when exceeding 100A it will show 100.0A Power frequency: 45.0Hz-65.0Hz Power factor: 0.00-1.00P Active power: measurement range is 0-45000W, display resolution between 0-9999.9W is 0.1W, and the rest is 1W Electricity: measurement range is 0-99999kwh, minimum display resolution on 0-999.99kwh is 0.01kwh 10000.0-9999.9kwh, minimum display resolution is 0.1kwh, minimum resolution on 10000.0-99999kwh is 1kwh 3. Measurement speed: approximately 2 times per second 4. Dimensions: 494752(mm) 5. Hole size: diameter 22mm 6. Save function/memory function: automatic save function: when power is turned off, the meter automatically saves the current energy value, and the meter will read the value after power is turned on again and continue to accumulate. Usage and wiring method 1. Connect the wires according to the wiring diagram in the attached drawing and insert the two-wire contact into the secondary end of the instrument's current transformer at the instrument's secondary input end. For the main winding of the current test, pass through the central round hole of the current transformer. 2. Connect the voltage measurement wire to the meter's voltage measurement input terminal. Then turn on the meter's voltage. Start reading the measurement results. 3. The meter's power reset button is located on the lower right side of the meter. When power needs to be reset, use a circle with a diameter less than 2 mm and press gently into the reset hole for 5 seconds to reset the accumulated power value to zero. Precautions The meter with a 250-450V range is only suitable for pure AC 50V power supply. It cannot be used for square wave, inverter output, or modified sine wave measurement; otherwise, the meter will be damaged. The meter with a 50-300V range is unaffected. Notes: Please allow 1-3 cm measurement error. The color may slightly differ from the actual product due to display differences on various screens. Packaging includes:1*Multifunctional voltage current and power frequency meter