Fireboy-Xintex CO Alarm w/Interconnect - White

The Fireboy-Xintex CMD6-M Series CO Alarm in white is powered by included maintenance-free lithium-metal batteries, with interconnect for up to 10 units.

Internal battery power is the reason to choose this version. There is no wiring at all, so the alarm goes anywhere a screw will hold it. That cuts both labor and material cost, and it means a sleeping cabin without a nearby circuit still gets its own detector rather than being covered by one down the passageway.

A carbon monoxide alarm belongs in every accommodation space. An open-layout small craft might manage with one, but two partitioned sleeping areas each need their own. Up to 10 units interconnect, so every alarm sounds together if any one trips. On a boat with separated cabins that is what wakes the person furthest from the source.

The sensor uses a Time Weighted Average process, tracking CO concentration alongside temperature and time to calculate carboxyhemoglobin levels rather than triggering on a raw CO reading. That reflects how much oxygen-carrying capacity the blood has actually lost, which is what determines danger. Sensor life runs about 7 years to end-of-life. Explore more gas and carbon monoxide detectors.

• Internal battery, so no wiring at all
• Puts a detector in a cabin with no nearby circuit
• Interconnects up to 10 units to sound together
• TWA sensing tracks blood effect, not raw CO