Magnetic Door & Window Sensor — Smart Home Open/Close Detector with App Alerts, Tamper Switch, Easy Stick Install

Keep tabs on doors and windows from anywhere: this magnetic open/close detector senses when an entry is opened or closed and immediately sends alerts to your smartphone app for real-time remote monitoring. Security is enhanced by a built-in tamper switch that triggers an instant alarm and pushes a notification to the app if the device is removed without authorization. The sensor uses a smart power-saving design that delivers 3 Years of Long Battery Life and the battery is replaceable. Housed in a minimalist acrylic casing, it combines a low-profile look with practical durability. Installation is effortless — peel off the double-sided adhesive and stick the sensor where needed to complete setup in seconds.