Large LOUD ALARM: Door and window sensors are designed to detect entry and help prevent children from leaving the house unintentionally. Ideal for securing home offices, garages, dorm rooms, or apartments. The alarm is audible from another room, providing immediate notification when a door or window is opened. For safety, install out of reach of young children. Suitable for use on sliding doors, windows, drawers, and refrigerators. Helps monitor access points in your home and provides an added layer of security against unauthorized entry through windows and doors. EASY INSTALLATION: Clean the surface, peel off the adhesive backing, attach the alarm to the door and the magnetic strip to the door frame. No tools required. Securely mounts with strong adhesive tape. Simple tap-to-test function. Ideal for entry warning in homes, apartments, mobile homes, offices, hotel rooms, and garages. Note: Measurements are manually taken. Please allow 1-3 cm variation. Due to lighting and display differences, slight color variations may occur. Actual product may vary slightly in appearance.