Item specifics:HTN wide view LCD with green backlight, can display voltage, current, energy, powerPower and energy direction display function: reverseforward directionBuilt-in shunt designEnergy data and backlight status can be saved when power off1. TensionMeasuring range: 0-300V(independent power supply DC 5-12V)8-300V(direct power supply)Display format: =100V Display e.g.: 100VNote: When the measured voltage is less than 8V, the meter must be connected to an independent power supply when the measuredWhen the measured voltage is greater than 8V, the meter can be connected to an independent power supply or not connected to the power supply.2. CurrentMeasuring range: 0-300A (200A, 300A optional)Display format: =100A Display e.g.: 100A3. PerformanceMeasuring range: 0-90kWDisplay format: =10000W Display e.g.: 10.0kW4. EnergyMeasuring range: +- 0-999kWhDisplay format: