Item specifics: HTN wide-view LCD with green backlight, displays voltage, current, energy, and power Power and energy direction indication: forward/reverse Built-in shunt design Energy data and backlight status retained after power-off 1. Voltage Measurement range: 0–300 V (with separate DC 5–12 V power supply) / 8–300 V (direct power supply) Display format: e.g., “100V” for values ≥100 V Note: When measured voltage is below 8 V, an external DC 5–12 V power supply is required. When measured voltage is above 8 V, the meter may operate with or without external power supply. 2. Current Measurement range: 0–300 A (200 A or 300 A options available) Display format: e.g., “100A” for values ≥100 A 3. Power Measurement range: 0–90 kW Display format: e.g., “10.0kW” 4. Energy Measurement range: ±0–999 kWh Display format: e.g., “123.4kWh”