Features: brand new and high quality There are two types, closed and opened, choosing according to your need. Full view LED display, read the numbers more clearly. Press on the light button to turn on or off the backlight, and the backlight state will be automatically saved when the power is off. 100A sensor, measuirng rang : 80-260V. This moudle is suitable for indoor, loading can'for t exceed rated power, connecting the cables correctly. Specifications: Material: ABS Size: 67x57.5mm/2.6x2.3 inches Power Test range: 0-22KW Within 1KW, display format 0.0-999.9W; 1KW and above, display format 1000-9999W; 10KW and above, screen format 10.0-22.0KW. Energy Test range: 0-9999kWh Within 10kWh, display format 0-9999Wh; 10kWh and above, display format is 10-9999kWh More than 9999kWh will return 0. Note: Cleaning power: Step 1: Press and hold SET for at least 3 seconds until the number flashes in the battery display area, then release the for key. Step 2: If you press the setting button again, the power data will be cleared and the state of clearance will be cleared. Short press the light button again, the boot data is not cleared, the state is cleared. If there is no for key within 10 seconds, the boot data is not cleared, and the state is cleared. Power Alarm Setting: Step 1: Long press on the light button for more than 3 seconds, until the power display area flashes, and then release the button. Step 2: The power display area displays the current power alarm value and the minimum flashing start times. Short press the adjustment for key at the digit +1 and press the light for key to switch the alarm number. The alarm value cannot exceed 25KW (the factory default is 25KW). Step 3: After setting, long press the light button for more than 3 seconds or no button action for more than 10 seconds, save the data and exit the setting state. Power supply/power switch: Short press the setting button to display the current electric quantity/accumulated electric quantity, and the screen state is automatically saved. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Voltmeter