Tuya compliant. Support linkage with other Tuya devices Single phase system compatible Measures real-time Voltage, Current, PowerFactor, Active Power and frequency Support Energy Usage/Production measurement Usage/Production by hour, day, month App can display active power, current, voltage - You can check hourly, daily, monthly electricity consumption in the App. Automation , It allows to make a Scene for this device working with other tuya devices. For example, when the reverse or forward power (watts) or KWh reaches a value, the other Tuya switch can turn on , or turn off. Colour:White Material:Plastic Package Contents: 1 * Tuya Smart WiFi Energy Meter Only the above package content, other products are not included. Note: Light reflection 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. SZRH