Description：

• 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 1.5V LR44/AG13 button cell (batteries included in package).

Operation instructions:

• Use the double-side adhesive tape to fix the main unit at the side of the door&window. Attach the bar magnet to door frame/window frame with the arrow aligning with the reference line 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&window.