Fangrui Product Details 1. Diy-wt-09 20a Temperature Switch Smart Thermostat, Compatible With Google Alexa Yandex Alice Ifttt 2. Inputoutput: Ac 85-250v 5060hz 3. Maximum Current: 20a 4. Maximum Load: 3800w (resistive Type) 5. Wi-fi Standard: Wi-fi 2.4ghz Bgn + Bluetooth 6. Operating Temperature: -20 Degrees Celsius - +80 Degrees Celsius 7. Operating Humidity: 8. Material: Abs 9. Size: About 9.3 X 5.5 X 3.1cm 10. Features: 11. App Remote Control, Install The Ewelink App, Control The Switch Through The Application, And View The Real-time Status Of The Switch And The Temperaturehumidity Values At Any Time 12. You Can Set Scheduled Tasks, Timers, Or Cycle Timers To Automatically Turn The Device On And Off 13. Automation: Can Be Set To Automatically Turn On And Off Within A Certain Temperaturehumidity Range 14. Supports Voice Control, Suitable For Googlealexayandex Alice 15. Shared Control: You Can Share The Switch With Family And Friends And Set Control Permissions 16. Suitable For A Variety Of Scenarios, Such As Nurseries, Storage Rooms, Greenhouse Cultivation, And Greenhouse Breeding 17. Application Scenarios: The Waterproof Temperature Sensor Can Be Used In Fish Tanks To Monitor Changes In Water Temperature At Any Time