This multifunction meter measures AC voltage, AC current, active power, power factor, frequency and electrical energy. The result will be displayed on the color LCD screen. Feature:Multi-function digital display meter can simultaneously measure and display 6 parameters of AC voltage, AC current, power, frequency , electric energy and power factor. With power-off memory function: when use is interrupted, the accumulated power value of the meter is automatically stored (previous data will not be lost). Equipped with high-definition LCD display, which is clear and easy to read.There is a reset button on the right side of the screen, long press for 5 seconds to reset the accumulated value. A digital electricity meter that monitors household electricity consumption in real time.Main specifications1. Measurement accuracy: 1% 2 digits2. Measuring range: AC voltage: AC80.0-300.OV or AC200.0-450.0V, true RMS measurement. AC current: ACO-99.99A, current display resolution is 0.01A, when 'it exceeds 100A, it will display 100.OA (maximum range 110-12OA)Active power: 40-300V display range 0-30000W, 200-450V display range 0-4500OW, display resolution between 0-9999.9W 0.1W, [the rest is 1W]Electrical energy: the measurement range is 0-99999kwh, the minimum display resolution of 0-999.99kwh is 0.01kwh ,10000.0-9999.9kwh minimum display resolution is 0.1kwh,10000.0-99999kwh minimum display resolution is 1kwhPower frequency: 45.0Hz -65.0Hz Power Factor: 0.00-1.O0PF3. Measurement speed: 2 times per second4. Dimensions: 70*40*39mm5. Installation size: 68*38mm6. Memory Function: When the meter is powered off during use, the accumulated power value of the meter will be stored by itself (previous power data will be saved).