[Kevin Pro]

First time ever I heard a beep , couldn’t figure out what it was, the red light was on my carbon monoxide detector, could not shut it off?? Took cover off, there is no battery??? When got back to dock checked engine compartment every thing seemed fine??? It was 1 beep like every 10 or 20 seconds??? How do I shut it off??? Any thing to check or clean??? Thank you

How old is the CO detector? I just had this on my boat with my units. Manual says they have a lifespan of 4-5 yrs, not exactly sure of the time but when they reach life expectancy the light turns red and emits a beep every 30 seconds. You can reset them to work for another 30 days or so but basically need new units, I have the Fireboy units. Hope this helps.