Usage Tips:1. Wifidin Rail Switch,Model To-0-Sy1,Into Smart With Your DlY Ldea,Benefit Your Life,Make Your Finger To Touch Every Corner! 2. High Quality,From Good Material,High Precision,Manganese Copper,Flame Retardant,High-Performance,Chip Module.Long-Life Motor System. 3. Smart Protection,A Variety Of Functions,Setting The Switch Status Of The Equipment In Different,Scenarios,And Remotely,Monitor The Real-Time Situation Of The Load Electrical Appliances. 4. View Load Current, Voltage, Power In Real Time,Record(Year,Month,Day,Hour),Electricity Consumption In Different Time Periods. 5. More Smart Scenarios,Devices-Interlock Mode,Connect It, You Can Monitor The Usage Of All Home,Equipment, You Can Remote Control, Timing Control, Make Life More Intelligent. Colour:As Shown Material:nylon size:82x50x18mm style: white Without metering / black With metering Package Contents: 1 * Wifi Smart Circuit Breaker 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.