Built-in Mijia Bluetooth supports the Mijia app to remotely access and connect Mijia smart devices * When the Mijia Bluetooth gateway device is equipped, you can remotely access the Qingping Bluetooth thermometer and hygrometer via the Mijia app, set up pairing with the Mijia smart device, and get historical data from the cloud. 30 days of historical data can be stored Qingping Bluetooth thermometer has built-in storage capacity, which can store historical data every 15 minutes for up to 30 days. Magnetic design is convenient to attach and remove the main body of the Qingping Bluetooth thermometer and hygrometer on the wall. Built-in magnet and iron plate built-in wall sticker are convenient to attach the main body to the wall, fine-tune the angle and remove it. Open the hidden bracket to change desktop decorations in seconds. Open the lid, you can place it on the table, smart and firm, the angle is just right. Constant changes in temperature and humidity continue to affect body comfort A correct understanding of temperature and humidity is a prerequisite for improving comfort. The ultra-thin 14 mm body has a battery life of up to 8 months. Qingping's Bluetooth thermometer and hygrometer use CR2430 button batteries to create a 14 mm slim body. Thanks to the ultra-low power e-ink screen, it can be used continuously for 8-12 months in normal room temperature. Temperature 0~50C Humidity 0~99.9% (non-condensing environment) *Do not use it in an environment where the humidity exceeds 90% for a long period. Size 74 mm in diameter, 14 mm thick Weight 59 grams Diameter of the screen's visible surface 55 mm Wireless Bluetooth 5.0 CR 2430 button battery Included: 1 * temperature and hygrometer