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.
W195 x D45mm.
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Marquee Media Ltd t/a Speedy Marquee. Company Registration Number: 4638328. Registered address: Unit 2, 20 Wharfdale Service Road, Bournemouth, Dorset. BH4 9BT.