General description Compact and efficient, the FLITI 4-Pack Home Security Door Alarm features a small design that is smaller than most door and window alarms. This versatile alarm system is perfect for various applications, including doors, windows, drawers, filing cabinets, safes, garages, RVs, offices, warehouses, and shops. It offers a loud 110 dB theft warning sound to deter intruders and provides peace of mind for homeowners. Technical specifications Alarm dimensions: 56 x 30 x 17 mm Magnet bar dimensions: 35 x 10 x 10 mm Power supply: 3 LR44 batteries (included) Installation DIY installation: Simply peel and stick the alarm and magnetic bar. Attach double-sided tape to the back of the alarm and the magnetic bar, then firmly stick them on the two sides of the door or window joint. Ensure the installation distance between the host and the magnetic bar is less than 1 cm for proper functionality. Usage 4 Working Modes: general alarm, continuous alarm, door closing alarm, and