Fangrui Product Details 1. Graffiti Wifi Temperature Dry Contact Switch Module App Remote Control Switch, Supports Google Alexa Voice 2. Input: Ac 85-265v, Acdc 7-32v (only One Input Power Source Is Required) 3. Output: Dry Contact Output 4. Maximum Current: 10a 5. Wi-fi Standard: Wi-fi 2.4ghz Bgn + Bluetooth 6. Operating Temperature: -20 Degrees Celsius - +70 Degrees Celsius 7. Package List: Switch, Sensor, Power Cord, Screwdriver 8. Size: About 8.6 X 4.6 X 2.4cm 9. Features: 10. App Remote Control, Can Be Remotely Turned Onoff Via The Tuya Or Smartlife App, And Can Monitor The Temperature And Switch Status In Real Time. You Can Also Set The Temperature Range To Achieve Automatic Control Of The Switch 11. After Turning On The Automatic Working Mode, You Can Select Different Operating Modes For Different Applications To Achieve Automatic Operation 12. Supports Voice Control, Suitable For Googlealexa 13. Timer And Schedule Function: You Can Set The Timer Or Schedule Function To Automatically Turn The Device On Or Off 14. Shared Control: You Can Share Your Device With Family And Friends Via Your Mobile Phone, Supporting Multiple Users To Control It Together 15. Data Statistics: You Can View Annual, Monthly, And Daily Temperature Change Statistics 16. Suitable For A Variety Of Scenarios, Such As Nurseries, Wine Cellars, Greenhouse Cultivation, Etc. Designed For Modern Living