Fangrui Product Details 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 Starts To Work. -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 Wires Connection Is , Just Put The Wires In The Clip And Measure. Specifications: Name: Tuya Zigbee Energy Meter Type1: 2ct Current: 0.2-80a Input Voltage: 110-240 V, 50/60hz Accuracy Grade