Fangrui Product Details 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. Due To Different Product Batches, The Appearance , Which Does Not Affect The Use. Type:with 120a Ct Colour:as Shown Material:plastic Package Contents: 1 * 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.