First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack 3-Pack Precision Detection SMI100-AC
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MSRP: $56.99
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The First Alert SMI100-AC Hardwire Interconnect Smoke Alarm with Battery Backup meets new industry standards utilizing First Alert's Precision Detection advance sensing technology. This hardwire smoke alarm is easy to install and replace existing alarms with no need to rewire. Plus interconnect compatible alarms to create a whole home alarm system to help provide an early warning.
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Average Price
$12.00
Min Price
$3.50
Max Price
$20.50
Other Active Listings
First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack 3-Pack Precision Detection SMI100-AC
Vandalia - Industrial Park Drive$7.00
Current bidRecently Sold
first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack precision detection smi105-ac 3-pack
Vandalia - Industrial Park Drive$3.50
Final priceEnded Feb 14, 2026
first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack
Cincinnati Seymour$20.50
Final priceEnded Oct 01, 2025
Compare with Amazon
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MSRP: $56.99