Smart App Control: Easily monitor real-time temperature and humidity through TUYA/Smart Life App. The data is synchronized with Google Weather, showing real-time weather changes and weather forecasts. 3 Wireless Remote Sensors: The temperature and humidity of 2 places are displayed on the screen and can be changed from CH1 to CH2 to CH3 (3 remote sensors included). The remote sensor has a transmission range of up to 60m in open space. Smart Message Alerts: Create preset temperature or humidity ranges and receive an immediate notification on your smartphone if levels fall out of range; keep an eye on changes in the air in your wine cellar, humidor, instrument box, greenhouse or home. Sensitivity and accuracy: Using Swiss Sensirion high-sensitivity digital temperature and humidity sensor, it can accurately detect temperature changes of 0.1°C and humidity changes of 0.1%. Enjoy accurate hygrometer thermometer data every 2 seconds. Trends and Historical Data: View historical dates of maximum or minimum temperature and humidity from the app, the stored data is displayed via graphs for clear observation. Shipping quantity: 1 (excluding battery)