【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 (45-65 Hz), and power factor (0-1PF). 【Backlight Control】: The backlight can be turned on or off by briefly pressing the button, and data is automatically saved when the backlight is off. 【Alarm Function】: You can set a current alarm threshold. When the backlight flashes, it means the current is greater than the overload power to warn of overload. When the current is lower than the overload power, the alarm stops. The battery alarm threshold can also be preset. 【Power Switch Reset Function】: Step 1: Press and hold the button for 5 seconds until the current number flashes, then release the button. Step 2: Briefly press the button again to clear the battery data and exit the flashing mode. Step 3: If there is no key operation 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.