'Just might save your life': Amazon's best-selling smoke detector is on sale right now

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This smoke and CO2 detector has a 4.3 out of 5 star rating with 2,142 customer reviews. (Photo: Amazon)

You can never be too safe. While most homes have a smoke detector, not many have a carbon monoxide detector as well. Carbon monoxide is known as “the silent killer” because it’s colorless and odorless. You may not even know you have a problem until it’s too late.

A good and reliable smoke detector that also detects carbon monoxide. like this one from First Alert, just might save your life. It’s on sale for $23, or $16 off its list price on Amazon.

Normally priced at $39, the First Alert Smoke Detector and Carbon monoxide Detector features a flashing LED indicator light that turns on whenever it senses carbon monoxide or large particles of smoke. It also features an 85-decibel siren that provides a clear warning of a gas leak or a fire in your home.

Meanwhile, the unit is battery powered, so if there’s a power outage at your home, the smoke and carbon monoxide detector will still work. It even includes two AA batteries to get you started.

In addition, it’s easy to install with just two screws for your ceiling or wall, while it also has test and low battery features — the unit beeps or chirps whenever you push the “test” button or when it needs a fresh pair of batteries, respectively.

“Well, this did the job. I had a fire in our fireplace that was almost out, down to the coals, so I closed the damper and went to bed,” a very grateful Amazon reviewer wrote. “An hour later ‘BEEEP.’ I looked at the alarm, and the CO LED was flashing. Oops. I guess the coals weren't as dead as I thought. It woke me up and the wife.”

The Amazon reviewer later added, “I am glad to know they work, and, while I've been aware of the sources of my troubles so far, I am confident this will alert me if there is some real trouble happening.”

Shop it: First Alert Smoke Detector, $23 (was $39), amazon.com

The reviews quoted above reflect the most recent versions at the time of publication.

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