Features 1.PRACTICAL MULTIMETER: Large LCD display. The voltmeter ammeter can simultaneously detect and display voltage, current, active power 2.ELECTRICAL PARAMETERS TEST RANGE: Voltage test range AC80~300V; Current test range 0~20A; Power test range 0~4.4kW; Energy test range is 0~99999kWh. This voltmeter ammeter is suitable for most places, please do not exceed the rated parameter 3.POWER OVERLOAD ALARM FUNCTION: Sets the power alarm threshold. When the detected power exceeds the threshold, the backlight and power supply will blink 4.MULTI FUNCTION: Possess back light control function, energy reset function, power overload alarm function, power off data storage 5.DURABLE ABS: Digital AC voltmeter ammeter is made of ABS material, possess impact resistance, scratch resistance, environmentally friendly Specification Item Type: Digital AC Voltmeter Ammeter Measurement Voltage: AC80-300V Measuring Current: 0-20A Measuring Power: 0-4.4KW Measured Energy Consumption: 0-99999KWh Measurement Frequency: 40-65HZ Power Factor: 0-1PF Timing Range: 0-999 Hours (no load, no time) Display Window: Approx. 41 x 48mm / 1.61 x 1.89in Overload Alarm: Can be set Voltage Alarm: Can be set Wiring Type: Fence type wiring terminal Installation Method: Embedded Product Size(LxWxH): Approx. 68 x 68 x 22mm / 2.68 x 2.68 x 0.87in Panel Hole Size(LxW): Approx. 63 x 63mm / 2.48 x 2.48in Package List 1 x Digital AC Voltmeter Ammeter 1 x User Manual