Function Description:1. Voltage:Measurement range: 80 ~ 260V.Resolution: 0.1V.Measurement accuracy: 0.5%2. current.Measuring range: 0 ~ 10A (PZEM-004T-10A); 0 ~ 100A (PZEM-004T-100A).Initial measurement current: 0.01A (PZEM-004T-10A); 0.02A (PZEM-004T-100A).Resolution: 0.001A.Measurement accuracy: 0.5%3. Active power:Measuring range: 0 ~ 2.3kW (PZEM-004T-10A); 0 ~ 23kW (PZEM-004T-100A).Initial measurement power:0.4W.Resolution: 0.1W.Display format:Less than1000W, display one decimal place, for example: 999.9W.greater than equal1000W, only display whole numbers, for example: 1000WMeasurement accuracy: 0.5%4. Power factor:Measurement range: 0.00 ~ 1.00Resolution: 0.01Measurement accuracy: 1%5, frequencyMeasuring range: 45Hz ~ 65HzResolution: 0.1HzMeasurement accuracy: 0.5%6, active energyMeasuring range: 0 ~ 9999.99kWhResolution: 1WhMeasurement accuracy: 0.5%Display format:Less than10kWh, display unit is Wh (1kWh = 1000Wh), for example: 9999Whgreater than equal10kWh, display unit is kWh, for example: 9999.99kWhReset energy: Use software reset.Power failure alarm:You can set the active power threshold. When the measured active power exceeds the threshold,Can report to policeCommunication Interface:RS485 interfacecolour:green + blackMaterial:plasticPackage Contents:1 x Digital Multi-function Meter1 x CoilOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.