This product automatically detects whether doors, windows, fire water tanks, and storage tanks are properly closed. The terminal reports switch events to the home fire alarm controller, enabling data statistics and alarm data collection. Data is transmitted via FosLink, ensuring high real-time performance. The module uses precise ADC sampling to support low battery alerts and real-time power measurement. The low-power communication module ensures the main unit has an ultra-low standby current of <30uA. It is suitable for applications such as drawers, iron doors, wooden doors, fire water tanks, and other scenarios that require position movement detection.