Item specifics: HTN wide view LCD with green backlight, can display voltage, current, energy, power Power and energy direction display function: reverse/forward direction Built-in shunt design Energy data and backlight status can be saved when power off 1. Tension Measuring range: 0-300V(independent power supply DC 5-12V)/8-300V(direct power supply) Display format: =100V Display e.g.: 100V Note: When the measured voltage is less than 8V, the meter must be connected to an independent power supply when the measured When 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. Current Measuring range: 0-300A (200A, 300A optional) Display format: =100A Display e.g.: 100A 3. Performance Measuring range: 0-90kW Display format: =10000W Display e.g.: 10.0kW 4. Energy Measuring range: +/- 0-999kWh Display format: