KERUI Door Window Alarm,D2 Remote Security Sensor System,Wireless DIY Magnetic Window Entry Contact Doorbell Easy Installation For Home Shop Company (White-1)

Doberman Security’s 4 pack is imple, effective and affordable solution to home security! The magnetic Window/Door Alarm Kit is triggered by entry opening. Place the included magnet on the outside frame of any window or door you wish to protect. When opened by an intruder, the magnetic circuit is broken and a loud alarm will sound.

Product Features

• Easily Install:Open the back cover,Install the batteries or unplug the button battery plastic piece.Paste alarm and magnetic strip to the right position on the door or window.it will alarm when the distance between then more than one centimeters.