[Real-time data update]: iKiKin temperature and humidity meter has a built-in high-precision temperature and humidity sensor, which can accurately measure data and update it in real time without delay, providing you with the latest changes in the environment. Temperature tolerance 0.3C/0.54F temperature accuracy -19C~60C (-2.2F~140F) and 3%RH humidity accuracy 0~100%RH. The temperature and humidity meter can be set to a preset temperature and humidity range through the "Tuya Smart" or "Smart Life" application. If the temperature exceeds the set range, the buzzer will sound immediately, and you will receive an app push message immediately. Anytime, anywhere, let you know the temperature and humidity changes in your home. [Remote temperature and humidity monitoring]: Use the 2.4G wifi network to easily set up wifi, and automatically scan and add devices after turning on Bluetooth through the Tuya APP, and you can remotely view the temperature and humidity sensors. You can use this item to monitor your baby room, wine cellar and garage. Smart features allow you to adapt to your environment in real time. Use Anywhere & Built-in Rechargeable Battery: The thermometer and hygrometer are powered by USB data cable, and the built-in rechargeable battery is used as a backup battery, which can be used for more than 5 hours after power off.