【6 Measurement Functions】: One interface simultaneously displays 6 measurement parameters, including voltage (AC 80-260V), current (0-100A), power (0-22000W), energy consumption (0-999kWh), frequency (45-65Hz), power factor (0-1PF). 【Backlight Control】: The backlight can be turned on or off by short pressing the button, and data can be automatically saved when the backlight is off. 【Alarm Function】: You can set the current alarm threshold. When the backlight flashes, it means that the current power is higher than the overload power to warn of overload. When the current power is lower than the overload power, the alarm will stop. At the same time, the battery warning threshold can also be preset. 【Reset Function with Power Button】: Step 1: Press and hold the button for 5 seconds until the power digit flashes, then release the button. Step 2: Short press the button again to clear the battery data and exit the flashing mode. Step 3: If there is no button press within 5 seconds, it means that the performance data is not cleared and it exits the reset mode. 【Wide Application】: Widely used in household appliances, solar energy systems, industrial assembly lines, etc.