- Battery Operated Design : This door sensor is powered by two AAA 1.5V batteries (batteries not included), offering a hassle-free and dependable power source for consistent operation. - Low Battery Reminder : The built-in low battery alert keeps you informed, ensuring that you never miss crucial notifications due to power depletion. - Smartphone Control : Effortlessly manage this sensor through the Smart Life app, enabling quick integration with your smart home ecosystem for enhanced convenience and security. - Extended Detection Range : With a working distance of ≥15mm, this sensor guarantees a broad coverage area, providing reliable detection of door and window openings and closings. Practical Use Scenarios : 1. Home Security : Install this sensor on your windows and doors to receive instant alerts on your smartphone whenever there is unexpected activity, helping to protect your home. 2. Child Safety : Use the sensor on nursery windows or doors to monitor openings, ensuring your children remain safe and secure within their environment. 3. Energy Efficiency : Place this sensor on exterior doors to track when they are opened or closed, allowing you to manage heating or cooling more effectively to save on energy costs. With its reliable power source, easy-to-use app integration, and extensive detection range, this door sensor is an essential addition to any security or smart home system. Stay informed and enhance your home’s security effortlessly.