Dorgard Acoustic Hold Open Door Release Device
Wedging open fire doors is dangerous. Dorgard is a wireless solution that legally holds open fire doors, and enables them to close when the fire alarm sounds.
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 general noise or continuous sound exceeding 65 decibels.
The door releases 14 seconds after sound activation.
- Overall height - 205mm
- Casing height - 150mm
- Width - 195mm
- Depth - 45mm
- Weight - 700g
- Power - 2 x 1.5v C-size batteries
- Max door size - Power size 7, max weight 160kg
- Built in safety feature releases the closer if the general noise level exceeds 65 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.
- Activation: After hearing a continuous sound exceeding 65 decibels, 14 seconds after sound activation the door is released.