[Wireless App Control] - The temperature sensor uploads data to the app when connected via Bluetooth. You can check the max and min temperature and humidity values in the app from your phone. Smart devices such as mobile phones can connect up to 100 temperature sensors simultaneously.[High Accuracy Sensor] - A built-in MEMS sensor that updates every second to provide more accurate data and faster. The temperature error can reach ±0.5 ℃ (±1 ℉), and the humidity error can reach ±3%. Equipped with a Bluetooth 5.0 chip, the temperature sensor offers real-time wireless monitoring of temperature (-20 - 60°C) and humidity (0 - 100% RH). The connection distance is up to 50 meters (164 feet) (in open area).[Smart Reminder Alert] - App data turns red to alert you and your family to changes in temperature and humidity and make changes over time when data exceeds the preset values. An alert will be sent to the app. It can be applied to home monitoring, pets, refrigerators, freezers, walk-in refrigerators, wine cellars, and greenhouses, etc.[Data Storage Export] - The thermometer - wireless hygrometer will record data in the app every 10 minutes for a total of 100 days.[Size] 100*60*22mm[Package includes] Thermometer *1, card pin *1, instructions *1Special reminder: Our store has a 24-hour after-sales team that responds quickly and takes the customer's shopping experience as the first standard. You can buy with confidence and welcome your arrival._CA