We don't earn a commission on these links; we list them to help you compare, with prices as seen on the date shown. How this works
First Alert
First Alert Precision Detection 10-Year Sealed Battery Smoke Alarm with Slim Profile Design - SM210 (1046740)
$29.95
Price as of November 10, 2026 at firstalertstore.com. Prices change; the retailer shows the price today.
A slim-profile smoke alarm uses a sealed ten-year battery.
Published by Alarm Installers. How we check each alarm company.