Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack

These are the detectors you want! Photo-electric detectors will pick up smoldering fires as opposed to just flames. Also dual carbon monoxide and smoke detector alarm puts my mind at ease. Super easy to install & silence. So worth the price.

These seem to work pretty good but after a few weeks they started chirping, we had lithium batteries in them they wouldn't quit chirping until we put Alkaline batteries in .

My first Kidde Smoke and Carbon Monoxide Detectors lasted 10 years before the end of service life alarm started going off. I plan on having these for just as long. These new alarms are even louder than the ones they replaced which is nice in the event of something happening while someone is asleep in the house. They are built well with strong plastics and even fit in the old style housing so I was able to reuse the previous mounts instead of drilling more holes in my wall. The cost has gone up on them but its well worth the cost for the safety they bring.

Very easy to install and easy to test - the loud alarm is more than sufficient to wake from a deep sleep. After installing the mounting plate - two screws with wallboard anchors, simply remove a sticker preventing battery and terminal contact and twist the unit to secure to the mounting plate. Again, then test and the alarm is loud! If you're comparing with others, do pay attention to see if the unit is UL approved, not just tested to UL standards. Many of the cheap ones from china are NOT tested and approved by UL. If you read the low rating comments on those cheaper units the stories should give you sufficient pause to spend more for quality that protects your life.

So far so good - no fire, no smoke and no carbon monoxide. Changed the batteries at the year mark and check for the one-minute green flash on all of them at least once a month.