Bluetooth Sensor: Smart Temperature Sensor, Easily monitor humidity and temperature on Smart Life App. Smart Life app support you quickly get data, monitor your greenroom, pets, basement, indoor outdoor, etc Long Battery Life: The remote temperature monitor with Bluetooth low energy technology lowers battery consumption. Thanks to the memory function of the sensor, you don't have to worry about losing data after changing the battery Free Data Storage: monitoring with the thermometer hygrometer on Smart Life app. Supports online viewing of data graphs and export of data recorded over the past 2 years. Use App to Export data in CSV Format for analysis High-Accuracy Sensors: quality-made sensors provide a High-accuracy for detecting the humidity and temperature. The sensors-accuracy is between ±0.36F°/±0.2C°, humidity between ±1.8%RH The Bluetooth temperature and humidity monitor's is tiny designed, and with the lanyard holes design, use in baby rooms, potted plants, reptile vivariums, and other small spaces, meet your needs for any corner