Features: 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 will starts to work. Feature-rich Design: Automated setting of valve-values and push notifications, and the device is able to be calibrated by adjusting the percentage. Easy Installation: 35mm rail mounting, no need to replace wires connection is safer, just put the wires in the clip and measure. Specifications: Name: Tuya WiFi Energy Meter Material: PC Type: 1CT, 2CT (optional) Current: 0.2-80A Input voltage: 110-240 V, 50/60Hz Accuracy grade: 1.0 Working current: -10& 8451; to 55& 8451; Wireless type: 2.4GHz Item size: 47 * 47 * 18mm / 1.85 * 1.85 * 0.71in Packing List (1CT): 1 * Tuya WiFi Energy Meter 1 * CT OR Packing List (2CT): 1 * Tuya WiFi Energy Meter 2 * CT