Powerful Function: High-precise measurement, real-time monitoring of voltage, current and power of each channel when generating and consuming kilowatts. Mobilephone APP Control: The app displays real-time power, current, voltage, power factor and frequency of channel for forward and reverse. Power Statistics: APP program displays daily, monthly and yearly reverse and forward totals of channel individually. Power usage percentage display to avoids abnormal power usage. Automation Function: You can set the power or current value in APP, only when the power or current exceeds the value, the device starts to work. Feature-rich Design: Automated setting of valve-values and push notifications, and the device is to be calibrated by adjusting the percentage. Easy Installation: 35mm rail mounting, no need to replace wires connection is , just put the wires in the clip and measure. This Tuya WiFi intelligent energy meter helps measure how much energy the solar and p ovoltaic system is producing and how much power it is consuming by monitoring application. Controlled by the Tuya APP, the app displays real-time power, current, voltage, power factor and frequency for channel for forward and reverse. Supports automatic setting of valve-values and with push notifications, and the device can be calibrated by adjusting the percentage. Colour:White Material:Plastic Specifications:1CT Package Contents: 1 x Tuya WiFi Smart Meter 1 x CT Clamp 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.