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