Sound sensor operated device. Will hold a fire door open and then automatically releases the door should a fire alarm sound. Manual release and adjustment operation. Black. W195xD45mm. Battery operated. Non returnable.
This fire door retainer is an easy to use, battery operated sound sensor device which complies with all British standards, EC directive, UK workplace regulations and is approved by the Fire Brigade. The sensor holds a fire door open until a fire alarm sounds, when it will automatically release the door, thus reducing the spread of fire or smoke. There is a foot operated manual release and adjustment operation for manual closing and opening of the door.
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