The device is an energy meter that can measure voltage, current, power and active energy. It’s a 4 in 1 device that shows most accurate reading of 4 different data and display the measured reading on the screen. With large display the device also has backlit which makes readings clear to read even in extreme dark environment. Technical Parameters Power test range: 0~2kW Energy test range: 0~9999kWh Voltage test range: 6.5~100V Current test range: 0~10A Measurement Accuracy: 1.0 Weight: Approx. 137g