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Dorgard Acoustic Hold Open Door Release Device

Dorgard Acoustic Hold Open Door Release Device
Order code: DORGUARD
RRP

This acoustically activated fire door retainer keeps a fire door open legally and closes the door in the event of an alarm.

Activated after hearing a continuous sound exceeding 65 decibels or a general noise level exceeding 80 decibels.

The door releases 14 seconds after sound activation.

  • Overall height - 205mm
  • Casing height - 150mm
  • Width - 195mm
  • Depth - 45mm
  • Built in safety feature releases the closer if the general noise level exceeds 80 decibels.
  • Automatic night time release facility.
  • Battery operated wireless unit.
  • Complies with BS EN 1155.
  • Complies with BS 7273-4 Cat C.
  • CE marked.
  • Black supplied from stock but other colours available by special order.
  • Operation: Activated after hearing a continuous sound exceeding 65 decibels, 14 seconds after sound activation the door is released.

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