Features Backlight Controlling: The backlight can be turned on or off by shortly pressing the button, and the backlight state will be automatically saved when power off Data Storage Function: In the event of a sudden power failure, the last test data will be automatically saved; No need to worry about data loss due to sudden power failure Large LCD Display: Wide viewing angle LCD display, with green backlight, which can be read clearly even in dark environments. Compact and Portable: This voltmeter ammeter is small enough to fit right into your pocket without adding any extra burden to you. Direction Indication Function: The voltmeter has reverse and forward current and energy consumption direction indication functions. Specification: Item Type: DC Digital Meter Material: ABS Voltage:  Measuring Range: 0-300V (independent power supply DC 5-12V) / 8-300V (direct power supply) Display Format: 10v display, for example: 1.00V 100V display, for example: 10.0V ≥100V display, for example: 100V Initial Measurement：0.05V Accuracy: ±1% Current:  Measuring Range: 0-300A (50A, 100A, 200A, 300A type can be selected) Display Format: ±10 A display, for example: ±1.00A ±100 A display, for example: ±10.0A ≥±100 A display, for example: ±100A Initial Measurement：0.02A Accuracy: ±1% Power:  Measuring Range: 0-90KW  10W display screen, for example: 1.00W 100W display, for example: 10.0W 1000W display screen, for example: 100W 10000W display, for example: 1.00kW ≥10000W display, for example: 10.0KW Initial Measurement：0.1W Accuracy: ±1% Energy Consumption:  Measuring Range: ±0-999kWh  ±1 kWh display, for example: ±100Wh  ±10 kWh display, for example: ±1.00kWh  ±100 kWh display, for example: ±10.0kWh ±1000kWh display, for example: ±100kWh overflow will keep the data unless you reset it yourself. Initial Measurement：1WH=0.001KWH  Accuracy:±1% Package List: 1 x Electric Meter 2 x Test Lines Package List 1 x Electric Meter 2 x Test Lines