10-YEAR LIFETIME with 1-YEAR 9V REPLACEABLE BATTERY: Jemay smoke alarm comes with an impressive ten-year lifespan. Powered by a replaceable 9V battery, it emits a "chirp-chirp" warning sound and ...

Siterwell Smoke & Carbon Monoxide Detectors are cutting-edge safety devices designed to provide precise and reliable ...

The sealed 10-year backup battery will have you covered ... and feel confident in recommending this one. Types of smoke detectors Battery-powered units: These are entirely powered by their ...