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Union DoorSense J-8755 Acoustic Release Hold-Open… (3603T)

£ 89.99INC VAT

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Union DoorSense J-8755 Acoustic Release Hold-Open Unit Red (3603T)

Holds the door open, but releases upon the sound of a fire alarm being activated. Timer included for automatic closing. Completely retrofits similar products.

  • Maximum Door Weight 160kg
  • Battery-Operated
  • For Internal Use
  • Easy to Install
  • No Wiring Required
  • Completely Retrofits Similar Products

More Info

View all: Union Fire Door Retainers

£89.99INC VAT

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Do these have a certain type of alarm that they work with

Asked by: Mrjonsykid
Should work with any audible fire alarm so long as it is loud enough to activate the release (at least 65dB). you can get various Apps for your phone to (approximately) meter the sound pressure at the mounting position. The British Standard for fire alarm installation, BS5839-1: 2013, (Clause 16.2), states: - The sound pressure level of alarm signals should be generally, throughout all accessible areas of the building not less than 65dB(A) . . . where the sound pressure level of background noise is greater than 60dB(A), the sound pressure level of the fire alarm signal should be 5dB above the sound pressure level of the background noise.
Answered by: VoteLabour
Date published: 2020-07-19
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Specification
Brand Union
Colour Red
Fire Rated (Yes/No) Fire Rated
Fire Rating Fire Rated to 30, 60 & 120mins
Manufacturer Guarantee 1 Year Guarantee
Max Door Weight 160 kg
Model Name DoorSense
Model No J-8755
Pack Size 1
Pieces in Pack/Case 1
Pre-Wired Battery-Operated
Product Type Acoustic Release Hold-Open Unit
Suitable Use Type For Internal Use

Product contents

2 x C batteries supplied.