Dorgard fire door retainers are designed to allow fire doors to be held open legally. In the event of a fire the fire alarm sound will activate the accoustic sensor with the Dorgard unit, this will then send a signal to the plunger to release causing the fire door to close under the force of its door closer.

Key features and benefits:
 

• Wire-free fire door retainer  

• Conforms to BS7273-4: 2007  

• Tested to BS EN 1155 and accepted by the Fire Brigade  

• Made in the UK  

• Compliance with DDA

• Proven in thousands of buildings across the UK

• Ideal for care homes, hotels, schools, offices that have an automatic fire detection system installed. 

• Installs in under five minutes

• Improves access for wheelchair users in line with the disability discrimination act

• Automatically releases when the fire alarm sounds

• Available in a variety of colours

• Automatic night time release facility

Technical specifications

• Overall height: 205mm

• Main casing height: 150mm

• Width: 195mm

• Depth: 45mm

• Casing: ABS

• Power: 2 x 1.5v C size alkaline batteries

• Expected battery life: 12 months (in normal environments)

• Trigger: 2.4 KHz continuoussound above 65 decibels