Features:
1) High decibel safety alarm
2) Crime arrival notification
3) Thin magnetic attachment with arrow
4) Easy installation requiring no wire
5) Used with windows and doors at home, offices and in factories
6) Safe and convenient
Flip the on/off switch to "on" position if an intruder opens the door/window, It will give out a sharp warning signal to warn the intruder to leave. To turn off the machine, flip the on/off switch back to the "off" position.
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