UNION DoorSense Acoustic Fire Door Holder
£89.47
Summary
The DoorSense acoustic release hold-open device from Union (ASSA ABLOY) provides an innovative solution for legally holding open fire doors whilst maintaining full fire safety compliance. This intelligent device enables free movement around buildings by holding fire doors open during normal operation, then automatically releasing them when fire alarm signals are detected, allowing the doors to close as designed for fire protection.
Engineered with advanced acoustic sensing technology, DoorSense responds to sounds greater than 80 dB lasting longer than 15 seconds – typically fire alarm signals. The device offers exceptional installation convenience, requiring no electrical wiring or secondary installation costs, making it ideal for retrofit applications. With its robust construction and extensive testing regime of over 50,000 cycles, DoorSense delivers reliable performance you can trust.
CE marked to EN 1155, EMC tested, and fire rated for timber doors (FD120), DoorSense legally permits fire doors to be held open for easier access whilst maintaining full compliance with fire safety regulations. The device is particularly valuable in care homes, schools, hospitals, and public facilities where accessibility and ease of movement are essential, yet fire door compliance cannot be compromised. Available in three colour options and featuring adjustable sensitivity settings, DoorSense adapts to various environmental conditions and aesthetic requirements.
Features
- Acoustic release door hold-open device technology
- Suitable for use with size 3 to size 7 door closers
- Rigorously tested over 50,000 operational cycles
- Automatically releases after sounds greater than 80 dB lasting longer than 15 seconds
- Adjustable release sensitivity to accommodate noisy environments
- Manual or automatic timer settings for release control
- Fail-safe mode automatically releases device in case of malfunction
- Supports maximum door width of 1600mm and weight up to 160kg (size 4)
- Battery powered operation with 2xC alkaline batteries included
- Low battery indicator for maintenance alerts
- No electrical wiring required for installation
- Quick and easy installation with no secondary costs
- Retrofits existing door hardware products in the market
- CE marked to EN 1155 standard
- EMC tested for electromagnetic compatibility
- Fire rated for timber (FD120) fire doors
- Available in three colour options – black, red, and white
- Comprehensive 2 year manufacturer guarantee
- Complete installation kit with batteries and fixings included
- Compact design with minimal visual impact
- Reliable performance for commercial and institutional applications
- Suitable for care homes, schools, and public facilities
- Legal compliance for holding fire doors open
- Robust construction for long-term durability
- Simple maintenance requirements
FAQ
How does DoorSense work?
DoorSense uses acoustic sensing technology to detect fire alarm signals. When it detects sounds greater than 80 dB lasting longer than 15 seconds (typical fire alarm characteristics), the foot plunger automatically releases, allowing the fire door to close via its door closer mechanism.
Is DoorSense legal for use with fire doors?
Yes, DoorSense is CE marked to EN 1155, EMC tested, and fire rated for timber (FD120) fire doors. This certification legally allows fire doors to be held open for easier access whilst maintaining full fire safety compliance.
Do I need electrical wiring to install DoorSense?
No, DoorSense requires no electrical wiring or secondary installation costs. It operates on 2xC alkaline batteries (included) and can be quickly installed using the provided fixings, making it ideal for retrofit applications.
What door closers is DoorSense compatible with?
DoorSense is suitable for use in conjunction with size 3 to size 7 door closers. A separate door closer must be installed as DoorSense only provides the hold-open function, not the closing mechanism.
Can the sensitivity be adjusted for noisy environments?
Yes, the release sensitivity can be adjusted to accommodate noisy environments, ensuring reliable operation whilst avoiding false activations from ambient noise levels.
What is the maximum door size DoorSense can handle?
DoorSense supports doors up to 1600mm width and 160kg weight (size 4), making it suitable for most commercial and institutional door applications.
How do I know when the battery needs replacing?
DoorSense features a low battery indicator that alerts you when the batteries need replacement. The included 2xC alkaline batteries provide extended operational life.
What happens if DoorSense malfunctions?
DoorSense includes a fail-safe mode that automatically releases the device in case of malfunction, ensuring the fire door can close properly for safety.
Where is DoorSense most commonly used?
DoorSense is ideal for care homes, schools, hospitals, public facilities, and any application where fire doors need to remain open for accessibility but must close automatically during fire emergencies.
What colour options are available?
DoorSense is available in three colour options – black, red, and white – allowing it to blend with different architectural aesthetics and door hardware finishes.
Can I set a timer for automatic release?
Yes, the timer can be set manually or automatically to release DoorSense at predetermined intervals, providing additional flexibility for specific applications.
What warranty coverage does DoorSense provide?
DoorSense comes with a comprehensive 2-year manufacturer guarantee, reflecting Union’s confidence in the product’s reliability and build quality.
Specifications
- Product Type : Acoustic release hold-open device
- Manufacturer : Union (ASSA ABLOY)
- Dimensions : 161mm x 105mm x 39mm (L x W x D)
- Acoustic Trigger Level : Greater than 80 dB
- Acoustic Trigger Duration : Longer than 15 seconds
- Maximum Door Width : 1600mm
- Maximum Door Weight : 160kg (size 4)
- Door Closer Compatibility : Size 3 to size 7 door closers
- Power Source : 2xC alkaline batteries (included)
- Battery Indicator : Low battery indicator
- Release Sensitivity : Adjustable for environmental conditions
- Timer Function : Manual or automatic setting
- Safety Feature : Fail-safe mode automatic release
- Test Cycles : Over 50,000 operational cycles
- CE Marking : EN 1155
- EMC Testing : Electromagnetic compatibility tested
- Fire Rating : Timber doors (FD120)
- Installation Type : No electrical wiring required
- Mounting : Floor/wall mounted with fixings included
- Colour Options : Black, red, white
- Product Code (Black) : J-8755A-BLK
- Product Code (Red) : J-8755A-RED
- Product Code (White) : J-8755A-WHITE
- Packaging : Boxed with batteries and fixings included
- Warranty : 2 years
- Standards Compliance : EN 1155, EMC tested
- Application Environment : Indoor commercial and institutional
- Installation Requirements : Separate door closer required
- Maintenance : Battery replacement as indicated
- Operation Temperature : Standard indoor environment
- Finish Options : Black, red, white powder coat
Downloads
- Datasheet (Adobe PDF)
Additional information
| Colour | |
|---|---|
| System Type | |
| Device Type | |
| Mounting | Floor |