Smart Wireless Alarm for Doors & Windows

• 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
• Warning door, window sticker is supplied free in package. Operated by 3pcs.1.5VLR44 button cell
• Batteries included in the package.

 Instruction:

• 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 "ON" position of the main unit and see whether the alarm can be triggered by opening the door or window.