Door Alarms for Home Security Magnetic door alarm sensor 120db alerts a person to a door or window opening.Once the alarm and magnet are separated more than 0.78 inches (20mm), the alarm siren keeps going until you close the door.Prevent children going out the house without notice. Also ideal entry warning for your home,office,apartment,garage and so on.Door and window alarm with 2 adjustable settings (Chime/Alarm).Easy installation,No wiring needed!No screws needed! Included double sided tape. Previous page Next page 1 Keeping Kids Safe 2 Pet Escape Reminder 3 Burglar-proof entry 4 Security Reminder.
eBay