【4 in 1 Multimeter】 This digital DC voltmeter ammeter is used to measure voltage, current, energy, and active power of electrical appliances. It has been approved by CCC, FCC, CE certification. 【Measurement Range】 Voltage test range: DC 6.5~100V, Current test range: 0~100A, Active power test range: 0~10kW, Energy test range: 0~9999kWh. Please do NOT exceed the rated parameters. 【More Features】 Large LCD display with backlight; Voltage alarm function; Energy reset function; Data storage upon power failure. 【Wide Application】 This DC voltmeter is suitable for indoor use and cannot be used outdoors. It can be used to monitor volts, amps, power, and energy consumption for batteries, solar systems, electric bicycle generators, and other areas. The load must not exceed the rated voltage and current. 【Package】 Package: 1 * DC multimeter (without shunt), 1 * user manual. Please note: Connect according to the wiring diagram we provide. If you want to try a different connection, please contact us first, incorrect connection will cause the product to burn out or not work. Product Description Voltmeter Ammeter Tester Indicator Voltage Current Power Energy Digital DC 6.5-100V 100A Volt Amp Watt Multimeter LCD Display Panel Function for measuring electrical parameters (voltage, current, active power, energy). Voltage test range: DC 6.5-100V, Current test range: 0-100A, Power test range: 0-10kW, Energy test range: 0-9999kWh. Voltage alarm function (over-voltage alarm threshold, backlight and voltage flash when alarming). Energy key reset function. Store data when power is off. Large LCD screen (displays voltage, current, active power, and energy simultaneously) Backlight function. Package: 1* DC meter, 1* manual. Please note that the package does not include an external shunt, if you want it with a shunt, please check our other models: 100A+ 50A/75mV shunt and 100A+ 100A/75mV shunt. Function Backlight control Press the button to turn the backlight on or off. The backlight status is saved when the power is turned off. Energy reset Hold the button for 5 seconds until the number flashes, then release the button. Press the button again, then the energy value will be cleared and exit the flashing reset state. If you do not want to clear, press the button again for 5 seconds until the number does not flash, this means the energy value is not cleared and exits the reset state. Voltage alarm Hold the button until the power display area shows \"SET \", release the button. The voltage area will display the current high voltage alarm value, the current area will display the current low voltage alarm value, and the last digit will start flashing. Press the button to adjust the value. It will automatically change the digit without action for 3 seconds, then press the button to adjust the value as well. Voltage alarm threshold setting range: 6.5V to 99.9V. After completing the settings, press and hold the button until the display shows \"PASS \".