Join Date: Feb 2011
Location: San Francisco Bay area
Thanked 57 Times in 57 Posts
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Re: Smoke and CO2 detectors
You definitely want a marine CO detector, not Home Depot, wired into 12V.
The domestic ones alarm when they reach a threshold, while the marine ones calculate an actual dose over time (time-weighted average). This means that a domestic one is constantly going off, when it gets a whiff of CO from your engine or someone else's. My marine one never triggers accidentally.
Bristol 31.1, San Francisco Bay