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