Carbon Monoxide sensors

[northern]

Anyone know a good source for them? Found some 12 volt ones on eBay for $70 to $120. Is that the normal price?
Are the 9 volt ones you get at Home Depot Coast Guard accepted. They are not hard wired in.

 

[JimG]

Yep, if you get anything that says "marine", it's going to be more expensive!
Any battery operated CO detector should be fine... I've seen some with 10 year sealed batteries for around $30.
Just be aware that some factory CO detectors are tied into the generator and will inhibit starting/running.

 

[Boater420]

I'd want at least one of them hard wired to the boat's 12v system for redundancy.

That way if the batteries die in the other units you're still covered. I've got a 12v FireBoy near the galley, and two battery powered unit, one in the v-berth and another in the cockpit.

 

[Captain Allen]

The ones you find at Home Depot, Lowes, etc. will sound at the first sniff of CO. The Fireboy-Xintex monitors you buy at WM, etc. are time-weighted, meaning they won't sound if you happen to open the cabin door while underway, resulting in a lot less "nuisance" alarms. For instance, if my cabin door is open when I am backing the slip, a home-type alarm will go off. I ended up buying a replacement Fireboy for that reason. Having said that, I know some that have both types on board, with the home version in the sleeping area.

 

[Little Ducky]

When I bought my 98 290 SD this year I replaced what looked like the original CO's with new style FireBoy's. They have a few different models depending on whether your CO's are tied into the generator circuit or not. Mine were not.

I bought them through West Marine.......