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First Alert Battery-Powered Electrochemical/Photoelectric Smoke and Carbon Monoxide Detector 2 pk

Two-in-one smoke and CO protection per unit, with a lithium battery included and a 10-year warranty backing the pair.
First Alert MPN 1048447 In Stock & Ready to Ship
$99.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days

About Product Overview

This First Alert two-pack covers two rooms at once with combination smoke and carbon monoxide detection, so you're not choosing between the two risks or buying separate units. Each alarm uses a photoelectric sensor to catch smoke and an electrochemical sensor to catch CO, giving you broader coverage than a single-hazard detector.

Power comes from an included lithium battery, so there's no separate battery purchase or immediate swap needed at install. First Alert backs the pair with a 10-year warranty and rates them at a Superior level of protection, making this a solid pick for bedrooms, hallways, or anywhere you want dual-hazard coverage without wiring into the house.

  • Brand: First Alert
  • Combo smoke and carbon monoxide alarm, 2-pack
  • Electrochemical/photoelectric dual sensors
  • Battery-powered with included lithium battery
  • 10-year warranty, Superior level of protection
  • Dimensions: 5.67 in. L x 5.67 in. W x 1 in. H

The Details Specifications

Ships Ground Travels by ground for safe handling — common for items with a lithium battery, aerosol, or liquid inside. Nothing extra to do on your end; it simply ships by truck instead of by air.
Brand First Alert
Model / MPN 1048447
UPC 194160011850
Weight 1 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to price-check us against Amazon, Home Depot, and Lowe's. Everybody does. Good — open all three tabs. We'll wait. Then look hard at what you're actually being handed over there.

On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for First Alert. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · First Alert

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