6 Parameters Display at the same time. Voltage Range: AC 40-300V, Current Range: 0-100A, Active Power: 0-30000W, Electric Energy: 0-99999kWh, Frequency: 45-65Hz, Power Factor: 0.00-1.00PF. When power is off, the electric energy data will be stored and retained. When power is restored, this watt meter will continue accumulating data. Data reset available for multiple measurement needs. Press the reset button for five seconds to reset the kWh usage meter. 6 Different Color Display, 178 viewing angle without dead zones, with backlight function. This AC power meter single phase is clearly visible day or night. This single phase power consumption meter features high-quality ABS flame-resistant material and precision chip, making it safe to use. Real-time monitoring of household electricity consumption helps reduce power usage and save money. This 6 in 1 Electricity Usage Monitor is easy to install and can be used indoors or outdoors. Suitable for home, school, market, industry, laboratory, etc. Note: This energy meter can measure non-standard sine wave output from inverters. 6 in 1 Electricity Usage Monitor This single phase energy meter can measure AC voltage, AC current, active power, power factor, frequency, and electric energy simultaneously. The power meter has a colorful, full-view, high-definition LCD to display measured parameters. Main Functions: Electrical parameter measurement Data reset Store data when power is off Colorful, full-view, high-definition LCD screen Backlight function Specification: Built-In CT / External CT Color: As shown Material: ABS Package Contents: 1 x AC Monitor Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. Measurement error allowed is +/- 1-3cm.