This exit stopper door alarm can be easily fixed to a fire door to prevent unauthorised use. The alarm unit is fixed to the top of the door and then a reed switch is fitted to the doorway. When the two come apart, the alarm is set off.
This exit stopper door alarm can be easily fixed to a fire door to prevent unauthorised use. The alarm unit is fixed to the top of the door and then a reed switch is fitted to the doorway. When the two come apart, the alarm is set off.