Windows/door Alarm

Windows/door AlarmFEATURES:
Easily mounted by adhesive tape to window or door.
Magnetic sensor switch detects entry proecting your home or office whether you are in or out.
Warning door/window sticker is supplied free in package.
Oper at by 3pcs 1.5VLR44 button cell (battery included inpackage)
OPERATING INSTRUCTIONS:
1. Use the doubleslde 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 refernce line of the main unit.
2. Test the setup by switching the system switch to ON position of the main unit and see whether the alarm can be triggered by opening the door/windo