Keep your home and business secure with this smart door and window sensor, designed to deliver real-time alerts straight to your smartphone. Whenever a door or window is opened, the sensor instantly triggers a notification through the app, allowing you to stay aware of family activity or unexpected entry—whether it's a child opening the door, an elderly family member attempting to go outside, or movement in any monitored area. The high-sensitivity detection system ensures quick response while minimizing false alarms. This versatile sensor can be used in a wide range of environments, including homes, retail stores, offices, hotels, reception counters, and warehouses. It is also suitable for securing drawers, cabinets, file organizers, and safes, giving you reliable protection for important areas and property. When placed at the entrance of a shop, the device can notify you immediately when customers walk in, helping you stay attentive to every visitor. Installation is simple and tool-free. The sensor and receiver come pre-paired out of the box—just mount the sensor on the door or window and plug in the receiver to start using it. With no wiring required, setup takes only seconds. For best performance, keep the installation gap within 0.4 inches. The device seamlessly integrates with Amazon Alexa and Google Assistant, offering convenient voice control and making it a natural addition to your smart home ecosystem. Everyday operation is efficient thanks to low-power design. Powered by two AAA (3V) batteries, the sensor can operate for over a year under normal use. When battery levels run low, the app will send a timely alert so you can replace them without interruption. This smart door and window sensor provides an easy, reliable, and modern way to secure your space—giving you peace of mind wherever you are.