About this item

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.

First Alert

First Alert Smi100-Ac, 9120B Replacement Hardwire Interconnect Smoke Alarm

4.52K+ ratings7K+ bought last month

Free shippingNew and sealedTracked

$27.99

● In stock

Quantity

Arrives Oct 27 – Oct 28

to United States · Order within …

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Ships from the United States, tracked all the way to your door.
New and sealed, or a full refund
Bought new in the USA from the brand or an established US grocer. Opened, damaged, leaking or not what you ordered? Tell us within 7 days of delivery.
Damaged or wrong? Full refund or replacement
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Buy it together

Goes well with this item. Each is the same price as on its own page.

This itemFirst Alert Smi100-Ac, 9120B Replacement Hardwire Interconnect$27.99
Pick 1First Alert Two-Story Fire Escape Ladder, 14 Feet, Steel, Black$79.99
Pick 2First Alert Bracket2 Mounting Bracket$30.99

Total for 3 items

$138.97

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Common questions

AUTHENTICITYIs this the maker's own product?

Yes. Every product is bought new in the USA from the brand or an established US grocer, and if one is ever found not to be genuine, we refund you in full.

DELIVERYHow long does delivery take?

3 to 4 days door to door for this item, including the time we take to place your order with the brand or retailer. Every parcel travels with a carrier tracking number.

PRICINGWhat does the price include?

Nothing is added at checkout: there is no shipping charge. Every price is for the whole package, never a cost per serving.

ALLERGENSWhere are the ingredients and allergens?

We show the ingredients and allergen statement the maker publishes. Recipes change, so the label on the package you receive always governs: read it before you open or eat anything.

RETURNSWhat if it arrives damaged or past its date?

Email photographs to hello@kitchenspread.com within 7 days of delivery and we refund the full amount or send a replacement at no cost. Food cannot be resold once delivered, so change-of-mind returns cannot be accepted.