【Accurate Temperature】Built-in temperature and humidity sensors. Temperature sensor -20°C to 60°C and humidity sensor 0%RH to 100%RH. The temperature is accurate to ±1°C and the humidity to ±5%RH and updates every two minutes for greater accuracy. 【Voice Control】You can ask about the temperature and humidity in the greenhouse via Assistant smart speaker. For example, \"what is your temperature, please?\" 【Remote Monitoring】No hub required, connect with 2.4 GHz Wi-Fi, you can remotely monitor the smart humidity sensor. The smart temperature sensor supports remote monitoring, free app alerts, °F/°C readings, history view, and temperature and humidity graph functions. 【Data Storage】The indoor hygrometer supports data export and built-in data storage for one year. Logs can be downloaded quickly and easily with a smartphone and then exported as a CSV file via email. 【App Notification】If the WiFi hygrometer thermometer falls outside the range you have set in the Tuya or Smart Life app, you will immediately receive a push notification. You can turn on the low battery reminder, provide it anytime, anywhere, and know the changes in your wine cellar, greenhouse, etc. via the app. Without battery