DorMag Pro is a magnetic door retainer that discreetly holds open a fire door and releases it automatically when a fire alarm is triggered
What sets DorMag Pro apart is its completely wire-free operation, powered by a robust battery pack of three lithium cells. This battery configuration delivers a long-lasting energy supply while enabling compact installation – no cabling or mains power required.
Designed to be mounted behind the door, the DorMag Pro comprises two components: the Pro unit on the wall and the Door Keeper on the door. When in use, the two parts magnetically latch to hold the door open. Upon fire alarm activation, a pulse demagnetises the unit and retracts the magnet, forcing the door to close. Critically, once retracted, the magnet cannot be re-latched, putting the unit into a fail-safe state with no excess power drain – just its low, latent current waiting for the all-clear signal from the building’s fire system.
Innovating without compromise
The journey from concept to product involved a commitment not only to engineering excellence but also to industrial design. Fireco’s product design team set out to create a solution that didn’t look like a compliance requirement, but rather a seamless addition to modern environments. Initial development began with pencil sketches, foam modelling, and early CAD work, progressing through extensive prototyping and testing.
Through iterative design cycles, Fireco sought a balance between robust structural performance and aesthetic subtlety, ensuring that the DorMag Pro could blend into a space without compromising on mechanical strength. Its sleek housing is discreet enough for listed buildings, educational environments, and modern commercial spaces alike.
Engineered for assurance
In a regulated industry like fire safety, development is only half the battle – rigorous compliance testing is essential. DorMag Pro underwent exhaustive in-house testing, including 50,000 open/close cycles on Fireco’s custom test rig. It meets the EN1155 standard for electrically powered hold-open devices used on fire doors, confirming both safety and durability.
Beyond lab testing, Fireco partnered with beta site customers to validate real-world performance. These early adopters provided crucial feedback on functionality, installation, and design, helping refine both hardware and firmware before full market release.
A system-wide solution: Fireco Pro
DorMag Pro is part of the Fireco Pro System, a radio-activated network of fire safety products designed to work together seamlessly. Its operation is triggered by ProHub, which connects to the fire alarm panel and sends a 433–434 MHz radio signal – a regulated UK frequency – to release the magnet and retract the keeper. This frequency band ensures noise immunity, making it particularly effective in environments where sound-based systems might fail due to high ambient noise levels.
Beyond pro: introducing DorMag SmartSound
Complementing the radio-controlled DorMag Pro is Fireco’s latest launch: DorMag SmartSound, an audio-activated version of the same device. Using Fireco’s advanced SmartSound technology, this variant can differentiate between background noise and fire alarms, activating only when a genuine alert is detected.
DorMag SmartSound requires no external transmitter like the ProHub or ProExtender. It’s a completely standalone unit that retains the same compact, battery-powered design, offering an alternative solution for environments where wiring or network integration is impractical.
One product family, total compliance
The DorMag range now offers flexible solutions for different site needs – whether radio-triggered or sound-activated – all designed to comply with fire safety regulations while reducing installation complexity.
With DorMag Pro and SmartSound, Fireco continues to set new benchmarks for what fire safety products can be: elegant, innovative, and easy to use. These additions expand Fireco’s offering beyond Dorgard, ensuring there’s now a compliant door retainer for every environment.
To find out more about DorMag Pro, DorMag SmartSound or any other Fireco solution, visit www.fireco.uk or call 01273 320650.
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