1. Voltage alarm function: low over-voltage alarm threshold, screen flash alarm prompt. 4. Electrical parameter measurement function, the same screen display: voltage, current, power, capacity, timing, percentage. 3. Power-down data saving function, backlight timing function, low voltage setting function, capacity setting function. 2. Voltage calibration function, current setting function, current clearing function, current calibration function. 5. Wide range of applications: suitable for high and low power distribution cabinets, photovoltaic inverters, assembly line testing, electronic maintenance, DIY, etc., Manufacturer: Ounfhtrttk