3 Pack Carbon Monoxide detectors, co Detector, Carbon Monoxide Alarm Detector Battery Powered with LCD Display, Carbon Monoxide Detector, UL2034 Standards, for Home

All three installed and appeared to be functional. Well worth the price for the piece of mind. Hard to beat.

I bought this pack because I value breathing, and these detectors deliver exactly what I hoped for — reliable alerts without constant false alarms. Setup is quick: pop in the batteries, mount them, and you’re done. The digital display is clear, even at night, and shows actual CO levels so you’re not guessing. Each unit feels solid, not flimsy like the bargain-bin models that barely survive one season. The test button is loud enough to wake a small village, which is exactly what you want if something’s wrong. If you’re a homeowner, landlord, or someone who doesn’t want to make the evening news, grab this set. It’s one of those purchases you hope you’ll never need — but you’ll be grateful to have when it matters.

These are great value and quality. Everyone needs these don’t make excuses. Easy to install.

Work well one star removed due to extremely slow delivery

For price to get 3 each seems like good deal. Arrived fast, put batteries in and all 3 tested good and hung them up and looks good. Lighted, Digital screen will show amount of CO in ppm so knownhow much dealing with if goes off.

Much needed, because you never know. easy to use and install and great price I think.

Used in tent and home while using alcohol coil candle heater. Gives peace of mind

Bought these 6 months ago and now they are dead. If batteries wear that fast this item is not reliable enough to serve as a warning for carbon monoxide.

One of the three broke down in 4 months of use. Buzzer made a continuous long buzz with both lights green and code 8. When I moved the alarm outside the house into fresh air and tested with new batteries the same issue persists. This means there is a malfunction. When I place another buzzer in the same room at yhe same moment while the faulty ine is buzzing, the second alarm makes no sound. This confirms that the buzzer broke down. I have added an image and a video. I cannot trust anymore that the other two alarms can make a correct detection in case of a real incident. Would be throwing them away.