Battery Operated Marine CO Carbon Monoxide Detector | West Marine
Is It Time to Replace Your Boat's Carbon Monoxide Detector(s)? - Kingman Yacht Center
Safe-T-Alert Carbon Monoxide Alarm, 12V DC, Flush Mount, Hard Wire | West Marine
Shackcom Combination Smoke and Carbon Monoxide (CO) Detector Alarm 1 Pack, Protect Your Home from Fire and Gas Leaks, Even When You're Away, Battery Operated - Amazon.com
Xintex CMD-4MR | Fisheries Supply
CO Detectors: Fireboy/Xintex Wins; Safe-T-Alert is a Best Buy - Practical Sailor