Security System for Your Home - 120 DB Sirne alarm can not only cause huge shock on thieves, but also allows you to wake up while you sleep to prevent horrific accident. A door and window alarm with wide applications, break-in warning, ideal for home, office, hotel, apartments, garages, dorm room, or even RV. Keep Your Kids Safe - This magnetic wireless door and window alarm sensor is powerful enough to detect driveways, lets you know when your kids are opening doors or windows to keep kids and infants out, no matter where you are. inside or outside the house. (audible distance up to 750 ft / 230 m). Especially, if you have a swimming pool at home, it is very necessary to install a door alarm. Smart and Easy to Use Design - Size: 6.4x4.25x1.7cm, door and window alarm with smart size, alarm sound: > 120 dB, single door and ultra-slim window alarm, design with 3 adjustable settings (on / off / set). Alarm triggered by wireless magnetic sensor: alarm triggered after the entrance door or the opening of the window. Easy Install with Double Sided Adhesive Tape - Easily mounted on the window or the door thanks to the tape adhesive. No cabling required No screws required You can install this alarm on all windows and doors, drawers, doors and other plates. Simple Operation with Batteries Includes - Shackcom door and window alarm works with a set of 3 LR44 button batteries, for each alarm, there are 3 LR44 button batteries inside the product, in addition, we give 10 extra batteries. When the alarm is low, you should replace the batteries to better protect your home. See more details.