First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack 3-Pack Precision Detection SMI100-AC

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Product photo of First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack 3-Pack Precision Detection SMI100-AC

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.

$4.50

MSRP: $56.9992% off

Price Analysis

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Competition Level

Average Price

$4.59

Min Price

$0.00

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 bid

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Recently Sold

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Louisville - Intermodal Dr.

$1.00

Final price

Ended Jun 14, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Louisville - Intermodal Dr.

$17.00

Final price

Ended Jun 12, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Louisville - Intermodal Dr.

$2.00

Final price

Ended Jun 06, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Louisville - Intermodal Dr.

$2.00

Final price

Ended Jun 06, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Louisville - Intermodal Dr.

$3.50

Final price

Ended Jun 06, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Louisville - Intermodal Dr.

$2.50

Final price

Ended Jun 06, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Elizabethtown - Peterson Drive

$0.00

Final price

Ended Jun 03, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Dayton - Edwin C. Moses Blvd.

$10.81

Final price

Ended May 17, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Dayton - Edwin C. Moses Blvd.

$1.00

Final price

Ended May 17, 2026

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

Dayton - Edwin C. Moses Blvd.

$1.00

Final price

Ended May 17, 2026

First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack 3-Pack Precision Detection SMI100-AC

Price Analysis

Other Active Listings

First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack 3-Pack Precision Detection SMI100-AC

Recently Sold

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

first alert smoke alarm, interconnect hardwire detector with 10-year battery backup, smi105-ac, 3-pack

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