[Wireless App Control] - The temperature sensor uploads data to the app when connected via Bluetooth. You can view the highest and lowest temperature and humidity values in the app via your phone. Smart devices such as mobile phones can connect to 100 temperature sensors at the same time. High-precision sensor - Built-in MEMS sensor, updated once per second, provides more accurate data at a faster speed. The temperature error can reach ±0.5℃ (±1°F) and the humidity error can reach ±3%. The temperature sensor is equipped with a Bluetooth 5.0 chip, which can wirelessly monitor temperature (-20 - 60°C) and humidity (0 - 100% RH) in real time. Smart reminder alarm - The app data turns red to remind you and your family of changes in temperature and humidity, and ensure that when the data exceeds the preset value, it will change over time. Alarms are sent to the app. Can be applied to home monitoring Data export for storage - Thermometer - Wireless hygrometer records data in the app every 10 minutes for a total of 100 days. [Size] 100*60*22mm [Package included] Thermometer*1, card pin*1, instruction manual*1 p>