Smart Temperature Monitor: A Tuya hub is required to use temperature and humidity sensors. After adding the hub in the smart life/Tuya app, simply add the temperature sensor to the hub. Through the Tuya Smart/Smart Life app, you can easily monitor real-time temperature and humidity data anytime, anywhere. APP Reminder & Smart Linkage: The remote temperature monitor can be used as a temperature and humidity data source for the Tuya Smart and Smart Life app. You can set up smart scenes to trigger alerts. If it exceeds the range you set in the app, you will receive a notification alert. You can also set a condition in the smart scene to turn on/off the air conditioner when the temperature reaches a limit value. THIRD-PARTY VOICE CONTROL & FREE DATA STORAGE EXPORT: The digital room thermometer supports Alexa and Google smart speakers. You can know the temperature or humidity with your voice. "Alexa, what is the temperature on the Nane device." Our smart temperature sensors upload data to the app. Enjoy online data storage views and export data to see historical trends and clear graphs. Accurate measurement and low power consumption: The smart monitor is equipped with high-precision sensors that can accurately obtain a temperature of 0.3C and a humidity of 5%RH. The new technology combined with a low-power microprocessor allows for long-term standby; the product does not include a battery. Product size: 40*13mm Note: The data are all measured manually, please allow an error of 1-3cm due to differences in light and display, there may be some color differences, please refer to the actual item received.