Wireless fire alarm systems
Radio-linked detectors and sounders for heritage buildings, occupied premises and phased works where running cable is not practical.
- Scope
- Survey → commissioning → AMC
- Practice
- IS 2189 · NBC 2016 Pt.4
- Typical use
- Heritage, retrofit, occupied sites
For the buildings you cannot drill
Sometimes the obstacle to a fire alarm system is not the system, it is the cable. A listed façade, a stone or timber interior, a hotel that cannot close, a hospital ward that cannot be dusty, a tenanted floor plate where containment would mean lifting every ceiling — in all of those the cabling is most of the cost and all of the disruption.
A wireless system puts the same detectors, call points and sounders on a supervised radio link to a translator on the panel loop instead. Devices are battery powered with the battery state reported continuously, and the radio path itself is monitored, so a device that has moved out of range or lost signal shows as a fault rather than silently dropping off. The panel, the zoning and the cause and effect all work as they would on a wired system.
What it needs is a proper site survey. We measure signal strength on the actual building — walls, floors, lift shafts and plant all attenuate differently — and place the translators and repeaters against those measurements rather than against a floor plan. It is also a genuinely useful temporary system: a wireless alarm covers a site through construction or refurbishment and comes off the wall afterwards.
What the installation is built from
The same device set as a wired system, on a supervised radio link — plus the survey that decides where the translators go.
Tell us about the project
Send the drawings or the BOQ and we will price it line by line. Most enquiries start with a site visit, because the site decides the system — not the catalogue.