Kidde KN-COB-B Battery-Operated Basic Carbon Monoxide Alarm with Electrochemical Sensor, 1-Pack

From the Manufacturer

The leading cause of accidental poisoning deaths in North America, Carbon Monoxide is odorless, tasteless and invisible. It is a silent killer. Kidde CO alarms include the most accurate sensing technology available, the patented Nighthawk electrochemical sensor. This alarm includes a snap on cover that gives immediate access to the batteries and a safety feature that makes it difficult to close the cover without the batteries being installed. Install at least one CO alarm on every floor and in sleeping areas. Make sure CO alarms are at least 15 feet away from cooking or heating appliances to prevent false alarms. Replace CO alarms every 5 to 7 years to benefit from the latest technology upgrades.