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You can hang the Vibration Door Knob
Alarm or Chime
on any door knob. Turn the unit on to alarm. It will
sound for 5-15 seconds, then shut off. The unit is now armed. The door
knob alarm will be activated when the door knob is touched or jarred,
the alarm will will sound before the door is open for 5-15 seconds (this is adjustable). Low
battery indicator.
It uses a 9-volt battery (not included). Also acts
as door chime. Off/Alarm/Chime switch. |