
Ratings & Reviews for First Alert Hardwired (with Battery Backup) Ionization Interconnected Combination Smoke and Carbon Monoxide Detector
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise the dual-sensor smoke and carbon monoxide detector for reliable performance, straightforward installation, and long-term durability. The 10-year battery and combined detection in one unit eliminate clutter while providing broad protection. Many highlight easy wiring compatibility with existing systems through universal adapters, and the distinct alarm patterns—long beeps for smoke, short for carbon monoxide—improve emergency clarity. Reviewers emphasize the sturdy build and trusted engineering. A few note minor mounting differences or price concerns, but most consider this a dependable, long-lasting safety investment.
Customer review summary generated by AI, including incentivized reviews.Has anyone else had the same or similar issue?
I replaced my current unit because the green steady light indicator of hard wired unit “comes alive at night” and moves in random fashion as if it is searching the room. My old unit did the exact same routine and when I replaced it with a new unit, it does the exact same thing. What causes this? It is unnerving to say tge least! Thank you!
Verified Purchaser
Self explanatory easy to set up quick and easy !!!
Would RecommendIt seems like a good product haven’t had any issues
Verified Purchaser
Hi, thank you for taking the time to rate the Hardwired (with Battery Backup) Ionization Interconnected Combination Smoke and Carbon Monoxide Detecto...

Easy
Would RecommendVery easy to install!
Verified Purchaser
Need to change out base plate.
Would RecommendOpened the product first noted date was only manufactured 2 months ago, which is great because 10 years from the manufacture date they stop working.
Verified Purchaser
Detector
Would RecommendExcelente
Verified Purchaser
East to install
Would RecommendComes with various adapters so I can switch easily from Kiddie to First Alert without having to rewire my hardwire smoke alarms.
Verified Purchaser
Defective??
I had this installed a week ago using the battery that came with it. It is still going off occasionally with just one beep. I think I may return this one I'm not sure if it's defective or not
Verified Purchaser
Hi Linda, we would like to take a closer look at this for you. Our team can be reached at 1 (800) 323-9005. -Joey
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Great Smoke and Carbon Indicator
Would RecommendEasy t install.
Verified Purchaser
Duracell 9V Coppertop Included
Would RecommendSimple Combo Wired Smoke/CO alarm I like that First Alert includes a 9V Copper Top Duracell the same batteries that I would install! I also like the simplicity of just an Alarm long beeps for smoke and short beeps for gas! Been living for years with Kiddie/Firex that have voice alarm Fire Fire Fire!
Hardwire Smoke Detector
Easy to install
Verified Purchaser
Hi, thank you for bringing this to our attention. We would like to take a look at this. Please take pictures and video of this and contact First Aler...