Wireless Door Window Magnetic Burglar Alarm High Decibel 120dB Home Security Sensor Battery Operated Easy Installation

Protect your home with this wireless magnetic contact alarm that triggers a loud 120dB siren when doors or windows are opened unexpectedly. The compact sensor pair installs in seconds with adhesive backing — no wiring or tools required. Powered by three LR44 button cells (included), it provides reliable perimeter monitoring for entry points throughout the house. Ideal for apartments, offices, garages, and rental properties where permanent installation isn't possible. The alarm resets automatically when the door or window is closed, ready for the next event.