Smoke alarms
Replacement smoke alarms for home fire detection. Prices are from a US shop in USD, as seen on the date shown; confirm Canadian availability and suitability with the seller.
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First Alert
First Alert Precision Detection Interconnect Hardwired Smoke Alarm with Battery Backup - SMI100-AC (1046840)
$24.95
Price as of November 10, 2026 at firstalertstore.com
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
First Alert
First Alert Precision Detection Interconnect Hardwired Smoke Alarm with 10-Year Battery Backup - SMI105-AC (1046853)
$34.95
Price as of November 10, 2026 at firstalertstore.com
First Alert
First Alert Precision Detection 10-Year Sealed Battery Smoke Alarm - SMI110 (1046860)
$26.95
Price as of November 10, 2026 at firstalertstore.com
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