Does the First Alert Onelink combination Smoke and Carbon Monoxide alarm require batteries?

The great thing about the Onelink combination Smoke and Carbon Monoxide Alarm is that it helps keep you safe for 10 years without ever having to replace batteries! This model utilizes a ten year sealed battery that ensures a decade’s worth of uninterrupted awareness. The 10 year sealed lithium battery, eliminates annoying low battery chirps and costly battery replacements for the 10-year life of the alarm. The realization of a tamperproof design and the inclusion of a battery that doesn’t require a replacement provides the peace of mind for longevity and security.