Specialist detection for big volumes and high hazards

Beam Smoke Detectors and Flame (UV/IR) Detectors

System Sensor · Det-Tronics · MSA Safety Canada & United States $$$ · Flame detectors about USD $2,800–$3,000 each installed; beam detector pricing is quote-only

Projected-beam smoke detectors cover large open spaces such as atriums and warehouses where ceiling detectors are impractical. Optical flame detectors spot flames within seconds in high-hazard industrial areas.

Why we like it

One beam detector covers a span of open space that would otherwise need many spot detectors at height
Flame detectors respond within seconds and are commonly used to trigger deluge or suppression systems
Multi-spectrum IR flame detectors are designed to reject sunlight and welding

Watch out for

Beam detectors are prone to misalignment as buildings move
Flame detectors cost about USD $2,800–$3,000 each installed
Both need regular cleaning or alignment checks

Best for

Atriums, warehouses and hangars (beam); fuel, chemical, turbine and hangar hazards (flame).

Read the full market guide — costs, install effort and alternatives ↓

Market guide

The whole commitment, end to end

What this actually is, what the market looks like, what it really costs, and how much of your time it wants — before you spend anything.

Buying it Hard

Installing it Hard

Living with it Moderate

Up front

Flame detector (high-hazard) about USD $2,800–$3,000 installed (≈ CAD $3,860–$4,140). Beam detector: No reliable public figure — get quotes.

Lead time

Design-led; weeks

Time to install

Hours to days per area

How it works

A beam detector projects an infrared beam across the space, either to a reflector or to a separate receiver. Smoke in the path reduces the signal, and when the drop crosses a threshold the detector alarms. A flame detector does not wait for smoke at all: it reads the ultraviolet and/or infrared signature that flames give off. Multi-spectrum IR designs compare several wavelengths to tell a real flame from sunlight or welding arcs. Flame detectors are often wired to release deluge or other suppression systems directly.

Who needs it

Large-volume spaces where spot detectors are impractical, and fuel, chemical, turbine and hangar hazards. Application under NFPA 72.

Codes, standards and listings

Canada: Ask for the ULC listing. Fire alarm installation per CAN/ULC-S524.
United States: UL 268 (beam smoke detectors); FM 3260 approval (flame detectors); application per NFPA 72.

What the market looks like

System Sensor is the main beam detector name. On the flame side, Det-Tronics (Carrier) and MSA Safety serve oil and gas, chemical, power and aviation. Both product types are sold through fire alarm and industrial safety integrators rather than to owners directly.

Features that actually matter

Large-area coverage (beam): Spans open volumes where mounting spot detectors at height would be impractical or costly to service.
Fast response (flame): Detects flame directly within seconds, rather than waiting for smoke or heat to build.
False-alarm rejection (flame): Multi-spectrum IR is designed to ignore sunlight and welding.
Suppression release: Flame detectors frequently trigger deluge or suppression systems.

What it really costs

Up front: Flame detector (high-hazard) about USD $2,800–$3,000 installed (≈ CAD $3,860–$4,140). Beam detector: No reliable public figure — get quotes.
Consumables: None routinely.
What else you'll need: Integration with the fire alarm panel or suppression release, and mounting at height.
Over five years: Annual testing, beam alignment and lens cleaning. No reliable public figure — get quotes.

Flame detector figure from a US contractor cost guide (2025–2026); CAD figures converted from USD at ~1.38; we found no Canadian contractor pricing to check them against. No beam detector price source was found.

How it differs from the alternatives

Beam versus air-sampling: Beam detectors are simpler; air-sampling gives earlier, staged warning and is not thrown off by building movement.
Flame versus smoke detection: Flame detectors see open flame fast, which suits fuel fires that may produce little early smoke. They do not see a smouldering fire.

Buying it

Effort Hard

Where: Not sold to end users. Through fire alarm integrators (beam) and industrial safety integrators (flame).

Lead time: Design-led; weeks

For flame detection, the integrator should map each detector's field of view against the hazard.

Installing it

Effort Hard

Time: Hours to days per area

You'll need: Fire alarm or industrial safety integrator · Lift for high mounting

Beam detectors must be mounted on solid structure to limit drift out of alignment.

Living with it

Effort Moderate

Annual testing; beam alignment checks; flame detector lens cleaning.

If not this, then what

Air-sampling smoke detectionEarlier, staged warning in large spaces, at higher cost.
Spot smoke or heat detectorsCheaper where ceiling height and access allow.

Caveats

Beam detectors are prone to misalignment from building movement.
No beam detector price was found.
Canadian prices are converted from US figures; Canadian contractor pricing was not verified.

Our verdict

Specialist tools for specific problems: beam detectors for big open volumes, flame detectors for fuel and chemical hazards. If your integrator proposes either, ask how alignment and lens cleaning will be handled in practice.

We don't take payment for placement and we don't sell these products. If you think we've got something wrong here, tell us — we'll correct it.

Sources

Need this installed or serviced? Find a licensed contractor near you →

Also in Fire alarm & detection

The decision that sets your service costs for years $$$

Fire Alarm Control Panels (Addressable vs Conventional)

Notifier · Fire-Lite · Simplex · Edwards · Mircom · Siemens · 🇨🇦 🇺🇸

The panel is the brain of a building fire alarm: it supervises detectors and pull stations, sounds the horns and strobes, and signals the monitoring centre. Addressable panels tell you which device went into alarm; conventional panels only tell you which zone.

Read the pick →

Not the same thing as a home smoke alarm $$

Commercial Detectors, Pull Stations and Horn/Strobes

System Sensor · Edwards · Mircom · 🇨🇦 🇺🇸

These are the field devices of a building fire alarm: system smoke and heat detectors, duct detectors, manual pull stations, and horns, strobes and voice speakers. Unlike a standalone home smoke alarm, each one reports to or is driven by the panel.

Read the pick →

Earliest warning available, for spaces that justify it $$$$

Air-Sampling (Aspirating) Smoke Detection

Xtralis VESDA · System Sensor FAAST · Wagner · 🇨🇦 🇺🇸

A fan pulls air through a network of pipes with small holes into a laser detector, which spots smoke far earlier than a spot detector. It is used in data centres, cleanrooms, warehouses, heritage buildings and cold storage.

Read the pick →