Bluetooth Function The Bluetooth function is active during the initial configuration only. After setup, the device shuts down the Bluetooth network to conserve power and enhance security. Sensor and data quality The sensor uses quality components to provide reliable measurement data. The system supports remote monitoring and recording via the companion app. Temperature and humidity readings can be observed over time, and changes are displayed on the app or the device display. Data can be recorded to show trends with graphical representations. App monitoring and recording With the app, you can remotely monitor temperature and humidity, view realtime changes, and review historical data through charts and graphs. The app provides a convenient way to track environmental conditions over time, helping you understand patterns and respond quickly. Important notes Battery version: The temperature and humidity sensor in the batterypowered version cannot report data in real time. External sensors should not be placed in food or drinking water for human consumption. External sensors support temperature measurement only; humidity measurement is not available. External Sensor External sensor with a 100 cm wire length. Temperature measurement range: 40 C to 120 C. Use scenarios Home or office climate monitoring: Place the main unit in a living space to track ambient temperature and humidity, view trends in the app, and keep records for comfort and health. Refrigeration and storage monitoring: Use the external temperature sensor to monitor temperatures inside a cabinet, fridge, or storage area where placement inside is impractical, while the main unit remains accessible for setup and monitoring on the app. Industrial or lab environment: Deploy the external sensor to monitor critical equipment or environmental zones that require longer cable reach, with readings logged in the app for analysis and compliance.