First Alert CO400-3 Battery Powered Carbon Monoxide Alarm, 3-Pack

3-pack perfect for the whole home

Uses electrochemical carbon monoxide sensor--the most accurate technology available

Simple to use silence/test button

End-of-life timer and low battery warning; Includes 1-9V battery per alarm (battery updated from 2-AA to 1-9V in Nov 2013);

Compliant with CO laws in California, Wisconsin, and Oregon (and other states with CO law)

Protect your home from dangerous carbon monoxide with the First Alert CO400-3 Battery-Operated Carbon Monoxide Alarm 3-Pack. These carbon monoxide detectors each use an electrochemical carbon monoxide sensor to detect the CO you can't see, smell, or taste in the air. Each unit is powered by one 9-volt replaceable battery, offering peace of mind even during power outages, and includes a permanent internal sensor that lasts up to five years. An 85-decibel horn sounds if carbon monoxide levels are too high, and a pull-down action chart on the detector offers guidance on what to do if an alarm goes off. Each unit features a test/silence button that silences the alarm and allows you to test its functionality. No installation or outlet is required, and an optional wall mount is included.
Brand: First Alert, Model: CO400-3, Color: White, Size: 3-Pack