Multi-Function Single Phase Digital Meter LCD Display AC Voltage AC Current Power Frequency Electric Energy Power Factor Measurement Meter Monitor This multifunctional meter can measure AC voltage, AC current, active power, power factor, frequency and electric energy. The results will be displayed on a color LCD screen. Features: Multi-function digital meter can measure and display 6 parameters, including AC voltage, AC current, power, frequency, electric energy and power factor at the same time.  With power-down memory function: When the meter is powered off during use, the meter’s accumulated power value will be stored automatically (the previous data will not be lost). Equipped with a LCD HD display, which is clear and easy to read. There's a reset button on the right side of the display which can reset the accumulated values to if pressed and held for 5 seconds. One digital meter to monitor household power consumption in real time. Specifications: Material: ABS Color: Black Measurement Range:   AC voltage: AC 40.0-300.0V / AC 200.0-450.0V (Optional)   AC current: AC 0-99.99A, Minimum resolution is 0.01A   Power: 0-30000W(AC 40.0-300.0V); 0-45000W(AC 200.0-450.0V) 0-9999.9W minimum display resolution is 0.1W, otherwise Minimum resolution is 1W.   Electric energy: 0-9 999 999kwh.     0-9999.999kwh minimum resolution is 0.001kwh ;     10000,00-99999.99kwh minimum resolution is 0.01kwh ;     100000.0-999999.9kwh minimum resolution is 0.1kwh;     Otherwise minimum resolution is 1kwh Accuracy: 1%±2 words Measuring speed: 2 times per second 100A current transformer hole diameter 15.5mm Working temperature: -10～+50℃ Working humidity: 10～80% (no condensation) Working pressure: 80～106kPa Item Size: 70 * 40 * 39mm / 2.75 * 1.57 * 1.53in Item Weight: 83g / 2.92oz Package Weight: 90g / 3.17oz Package Size: 9*4.5*4.5cm / 3.54 * 1.77 * 1.77in Packing List: 1 * Multi-Function Digital Meter 1 * Toroid current sensor  1 * User Manual (English)