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Union DoorSense Hold-Open Acoustic Fire Door Retainer – J-8755A

Front view of the black doorsense showing a rectangular black device with a small white and red label
Group of three aadsbk aadws doorsense fire door retainers in white red and black shown from the front Front view of the black doorsense showing a rectangular black device with a small white and red label angled view of black doorsense device showing rectangular shape with a small protruding component at the top black doorsense kit contents including lock mechanism, screws, batteries, and instruction sheet on a white background Side view of the black doorsense showing its slim profile and angled top piece black doorsense showing the back side with labels screws and attachment points visible angled view of the black doorsense flat showing its textured surface and attached component Close up of a grey ferrule on a black doorsense device with textured surface and curved edge Close-up of a black doorsense showing a fixing point hole in the corner of the product casing Close-up of black doorsense showing plunger component on black surface Black doorsense device showing a close-up of the top plunger piece with textured surface Front view of red doorsense showing the main body and the handle with a small Union Assa Abloy label angled view of red doorsense showing its rectangular shape and a small elevated sensor panel red doorsense kit contents including red device, mounting bracket, screws, batteries and instruction sheet Side view of the red doorsense showing its shape and features from one angle Back view of red doorsense showing mounting surface and labels angled view of the red doorsense flat showing its red casing and small control features Close-up of a grey ferrule on the side of a red doorsense device Close up of red doorsense showing the fixing point hole on a red textured surface Close up of the red doorsense plunger part showing red and grey colours on a white background red doorsense showing a close-up of the red top plunger with a grey grooved pad on a smooth surface Front view of the white doorsense showing a rectangular shape with a small attached component at the top angled view of the white doorsense showing its rectangular shape and small black sensor on top white doorsense kit contents including main white unit, mounting parts, batteries, screws, and instruction sheet Side view of a white doorsense device showing its slim profile and top lever in white finish Back view of the white doorsense showing the mounting plate with labels and a small white sensor attachment at the top angled view of a white doorsense flat showing its curved top and attached component white doorsense showing a close-up of a white ferrule with a textured circular end and a small label on top Close-up of a white doorsense showing a fixing point and small ventilation holes on a textured surface Close-up image of a white doorsense showing a small white plunger part with two black rectangles white doorsense top plunger with a grey grip attached to a white plastic base
Customer Reviews

20+ In Stock

Estimated dispatch: Monday 20th July
£99.60 inc VAT

£85.99 inc VAT

£71.66 ex VAT

Standard Delivery

Will usually be delivered in 2-3 working days

£8.34 inc VAT

Next Day Delivery

Will usually be delivered the next working day

£10.74 inc VAT

Hold open fire doors safely and legally with the Union DoorSense Fire Door Retainer. Battery powered, and completely wireless, the DoorSense is simple to install on both new fire doors and retrospectively on existing doors. Once installed, these units provide improved ventilation and accessibility in high traffic areas, while still ensuring that fire doors close in the event of a fire.

  • Ideal for schools, hospitals, offices, public buildings, and other high traffic areas
  • Completely wireless – runs on 2 x C-Type batteries (included)
  • Automatically releases the door when the fire alarms sounds (above 64dB for 15+ seconds)
  • Designed for fast, hassle free-installation with low maintenance
  • Suitable for new and existing doors up to 1600mm and 160kg in weight
  • Improves ventilation and accessibility for all, and features automatic door release via timer function
  • Low battery indicator and fail safe mode
  • CE Marked to BS EN 1155:1997 and EMC tested and fire rated for timber doors (FD120)
  • 2 year manufacturer's warranty
  • Available in black, red, and white
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FAQs

FAQs (2)

Does the Union DoorSense need to be wired in?
No, it is fully wireless and battery powered.

Where can the Union DoorSense be installed?

The Union DoorSense can be installed on most internal fire doors in commercial and public buildings. It is suitable for doors weighing up to 160kg in weight or 1600mm wide, and has been fire rated for timber doors up to FD120.

Technical Data

Technical Data

Product Code AADSBK
Brand ASSA ABLOY
Manufacturer's Part Number J-8755A-BLACK
Battery Type Alkaline
Maximum Door Weight 160kg
Maximum Door Width 1600mm
Warranty 2 Years
Dimensions (Unit)
  • Height: 207mm
  • Width: 194mm
  • Depth: 43mm
Weight 600g
Datasheets
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