First Alert Battery-Operated Carbon Monoxide Alarm with Backlit Digital Display Brand_Johnsen’s Double-sidewall insulation maintains steady heat

Double-sidewall insulation maintains steady heat levels to give you even more consistent results

tamper resistant design

For Use On All Dry Clean Only Materials

It’s also formulated to kill flea eggs and larvae

First Alert Battery-Operated Carbon Monoxide Alarm with Backlit Digital Display Brand_Johnsen’s Double-sidewall insulation maintains steady heatBe alerted to dangerous carbon monoxide leaks with the First Alert CO3 B01D Battery Operated Carbon Monoxide Alarm. The easy to read digital screen shows both current power levels and peak CO levels when detected for quick, at a glance updates. Powered by two replaceable AA batteries, the alarm is installed easily and provides reliable CO detection for your home. Digital display shows peak carbon monoxide levels when detected Easy access front battery