Atwood 32703 RV Carbon Monoxide Detector - LCD Digital, White Atwood Digital CO Detector with LCD Display The Atwood CO detectors have a 10 year lifespan, so they need to be replaced less often than others which need replacing every 5 years The digital has a warranty of 7 years The Atwood CO alarms use a patented fuel cell technology which makes them less sensitive to humidity and false gases so the sensor is more accurate White