Fireboy Carbon Monoxide, Smoke & Fume Detectors

Fireboy-Xintex: Marine-Grade CO, Smoke & Fume Detection

When it comes to protecting lives aboard a vessel, few threats are as invisible — or as deadly — as carbon monoxide, smoke, and combustible fumes. Fireboy-Xintex has built a well-earned reputation as one of the marine industry's most trusted names in hazard detection, offering a focused lineup of carbon monoxide, smoke, and fume detectors specifically engineered for the unique demands of the marine environment.

The CMD Series: Purpose-Built CO Alarms

At the heart of Fireboy's detection lineup is the CMD Series of marine carbon monoxide alarms. The flagship CMD6-M employs an electrochemical sensor with a Time Weighted Average (TWA) process that constantly monitors CO concentration, temperature, and time to calculate carboxyhemoglobin (COHb) levels — giving a scientifically grounded picture of actual physiological risk rather than just raw ppm readings. A conformal-coated circuit board provides added protection against the moisture and vibration that are unavoidable in a marine setting.

One of the standout engineering achievements of the CMD6-M is its ultra-low current draw, which enables it to be the only marine battery-powered CO alarm of its kind on the market. The battery-operated version requires no power wiring, reducing installation labor and materials, while maintenance-free lithium-metal batteries keep it ready without routine upkeep. Sensor life is rated at approximately 7 years, far exceeding the lifespan of many competing units.

The earlier CMD5-M platform introduced features that continue to define the series. Its sensor technology delivers immediate and stable sensing that reduces false alarms, and the unit is highly resistant to common cleaning solvents and chemicals — a critical trait in any cabin or engine space environment. Both battery-powered and 12/24V DC versions are available to suit different installation scenarios.

Interconnect & Generator Shutdown Capabilities

What truly sets Fireboy's CO detector lineup apart is its system-level intelligence. Multiple CMD alarms can be interconnected so that when one unit detects dangerous CO levels, all linked detectors sound simultaneously throughout the vessel — alerting everyone aboard regardless of their location. Additionally, an optional internal relay module enables automatic generator shutdown upon CO detection, cutting off one of the most common sources of the gas at the source.

Smoke Detection: FBD Series & FG-250RV

Beyond CO, Fireboy addresses smoke threats through multiple product lines. The FBD Series fire detection system supports monitoring of up to 14 smoke or heat detectors per zone and can be configured to protect the engine room, battery compartment, lazarette, and accommodation spaces from a single panel. The system features voltage and EMI protection, reverse polarity protection, and a compact display with colored LED status indicators.

For simpler installations, the FG-250RV is a general-purpose photoelectric smoke alarm suitable for both marine and recreational vehicle use, featuring an 85 dB built-in alarm horn and compliance with U.S. Coast Guard requirements. Its durable construction is designed to reduce false alarms from kitchen steam or bathroom humidity — nuisances that plague lesser units in enclosed boat spaces.

Fume Detection: Gasoline & Propane

Rounding out the lineup, Fireboy's Xintex-branded fume detectors address gasoline vapor and propane leaks — hazards that can accumulate silently in bilges and engine spaces. Models like the single- and dual-channel gasoline fume detectors trigger audible alarms and can automatically activate bilge blowers or shut propane solenoid valves before dangerous concentrations develop.

• CMD6-M: Battery or 12/24V DC, electrochemical sensor, TWA monitoring, ~7-year sensor life, interconnect & generator shutdown capable
• CMD5-M: Solvent-resistant sensor, false-alarm reduction, battery or hardwired, multi-unit interconnect
• FBD Series: Multi-zone fire detection panel, up to 14 detectors per zone, engine room & accommodation coverage
• FG-250RV: Photoelectric smoke alarm, 85 dB horn, USCG compliant, marine & RV rated
• Xintex Fume Detectors: Gasoline and propane vapor sensing with blower control and solenoid valve integration

Whether you're outfitting a small runabout or a large offshore cruiser, Fireboy-Xintex's carbon monoxide, smoke, and fume detection products deliver layered protection backed by decades of marine safety engineering.