Wireless Alarm Siren For Windows & Doors set of 10

Specification:
It can also be used to alert you of an opening of a sliding glass door, door, window, locker, Gun cabinet almost anything!

Easily mounted by adhesive tape to window or door.
Magnetic sensor switch detects entry protecting your home or office whether you are in or out
The warning door, window sticker is supplied free in the package. Operated by 3pcs.1.5VLR44 button cell
Batteries are included in the package.

Dimension:
12.5cm x 9cm x 2.5cm (retail packing)

Instruction for use:
use the double-sided adhesive tape to fix the main unit at the door/window frame with the arrow aligning with the reference of the main unit.
Test the setup by switching the system’s switch to the “ON” position of the main unit and see whether the alarm can be triggered by opening the door or window.

What’s in the box
10 X Window Door Wireless Alarm Siren