When used in conjuction with a suitable door closing device, fire alarm and detection system, these briton electromagnatic hold open devices permit fire doors to be held during normal operation.
In the event of fire or smoke detection the units are automatically deactivated allowing the doors to close under the action of the door closer.
|503||Contract wall magnet - surface mounted||WHS|
|533FMB||Floor mounting bracket for use with 503 or 533 magnet||WHS; SE; SS|
|533||Specification wall magnet - flush mounted||SE; SS|
|533.C||Wall mounted cover for 533 magnet||SE; SS|
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