First Alert C0400B 4.8 Inch Long x 3.3 Inch Wide, Carbon Monoxide Alarm

Battery Operated Carbon Monoxide Alarm with Backlit Digital Display Be alerted to dangerous carbon monoxide leaks with the First Alert CO410 Battery-Operated Carbon Monoxide Alarm with Backlit...

1.6 Inch Long x 5.22 Inch Wide x 5.22 Inch Diameter, Smoke and Carbon Monoxide Alarm 85 dB Decibel Rating, Lithium Battery Included, Tamper Resistant

The First Alert CO400 Carbon Monoxide Alarm utilizes a electrochemical carbon monoxide sensor that lasts for up to 5 years to detect carbon monoxide. This carbon monoxide detector is battery powered,...

6.1 Inch Long x 3.8 Inch Wide, AC Plug In 120 Volt Carbon Monoxide and Explosive Gas Alarm 85 dB Decibel Rating, 9V Battery Included, Indicating Light

Carbon Monoxide Alarms, Carbon Monoxide, ElectrochemicalFeaturesIncludes the company's patented Nighthawk™ electrochemical CO sensorTest/reset button