Kidde Smoke and Carbon Monoxide Detector, Hardwired with 10-Year Battery Backup, Voice Alerts, LED, 85 dB, 30CUA10-V, 1 Pack

What I can't evaluate is how well these work since we haven't set anything afire since I put these up. And I'd prefer to keep it that way. Was replacing our should-have-been-replaced-long-ago original smoke detectors and got 2 of these--one for the basement and one for upstairs. The voice feature seems to be a gimmick until you realize if the alarm does go off, the voice announcement will make it much easier to know if you have a fire or a CO alarm. The detectors I was replacing were Firex with a different quick-connect. There are adapters available and I did use those. Unfortunately, those adapters were made to go vertically into the back of the detector, and on these particular ones the connector kind of nestles in horizontally. However... a few snips to remove some excess plastic and the connectors worked fine. The other 5 detectors I replaced were Kidde smoke (not CO) detectors. When pressing the test button on those, these detectors would also go off and announce "fire!". So interoperability within the Kidde family seems to work fine. Yay! Note that these have a permanent 10-year battery and at the end of 10 years (apparently which is tracked via a timer?) the alarm will start going off at 30 second intervals, requiring you to remove it and permanently disable it to drain the battery and shut it up. Again, having had these up for days, not 10 years, I can't say for sure exactly how that works. And most detectors these days, even some with replacable batteries, apparently will similarly self-expire after 10 years. To be fair that may be good: when I replaced the ~20 year old detectors, some would barely beep when tested, and a few had batteries that apparently had expired without any notification to us. (All had had batteries replaced some multiple times over their lifetime though.)

No more chirping and battery changes in the middle of the night! These things last for 10 years with no need for maintenance. These are a direct replacement for old style smoke alarms and are compatible with most home wiring. You may need to change the wire adapter, but it’s very easy to install. The green indicator light is super bright and easy to see from the ground. They are very sleek looking. These are an incredible value for how long they last.

False alarms with spiders. I installed multiple alarms in two different houses in May of this year. Then while away on vacation the alarms went off multiple times in a weeks in one house. Luckily I was able to silence them via the Ring App, but I had to disable do not disturb on my phone and keep the volume high so I won’t missed it in the middle of night. Didn’t want Ring to dispatch fire trucks to my house. Pretty much ruined my vacation. When I came back home, I had to uninstall all alarms and that seemed to work. But few weeks later the same thing happened at another house. This time I was able to isolate the failed alarm and silence it. But while reaching for the rest button, a small spider crawled out and back into the sensor hole. I quickly removed the alarm and bagged it with a plastic bag. Also these alarms should work even if not connected to the ring app but some would chirp. After doing a thorough research, I decided to removed all alarms and replaced with traditional models where the sensor hole is smaller therefore maybe won’t attract bugs easily. Couple of other I’ve learned is that new houses by code may require you to keep all alarms under the same brand. Also home insurance companies may possibly delay or deny your claim if smoke alarms are not all the same brand. Again, 5 stars to Amazon for helping with the returns.

Great combination smoke and fire detector. Easy to install and no stupid chirping battery. Highly recommend. Don’t forget to register product. It has a 10 year warranty and they will replace it.

Replacement was necessary so far everything is working well Had to have it installed y a professional

Replaced about 10 throughout our house months ago. Easy install procedure and appear to be working fine, as I’m still alive to write this review.

My Kidde 30CUA10-V was sold by Kidde through Amazon Fulfillment. This means I paid MSRP but it also means I got a freshly manufactured unit (2 months since the manufacturing date in Mexico), "white boxed" (actually, the plain box was brown without any hidden RFID retail devices), with no instructions for amateur installers. Since there was no price incentive to buy any particular unit, I purchased the most expensive (not too much more than the cheaper Kidde models, but much more expensive than Asian imports). I didn't trust the cheapest imports to work during a fire or CO1 event. My unit is a replacement for an earlier-generation Kidde, an AA battery+A/C unit that lasted about 7 years. There are no useful instructions, no tools, and no supplies (wing nuts, for example). Installation took me about 30 minutes as a very slow amateur. You might install in 5 or 10 minutes. The process is to turn off the power (mine is a dedicated circuit), unscrew the old bracket (the old bracket looks nearly identical to the new bracket, so I did not remove the screws, just loosened the screws), remove the old connector by unscrewing three wing nuts, install the new connector by twisting on the old wing nuts, tighten the new bracket, poke the wires back in the ceiling, screw on the new smoke/CO2 alarm, reset the circuit breaker, and push the test button. My unit is now mounted 90 degrees from what Kidde says is best aesthetically, perhaps because my old unit was mounted non-aesthetically by the builder, or perhaps because the new screw holes in the new bracket are 90 degrees off from the old holes. I've included a photograph so you can judge whether my unit is 90 degrees from being aesthetically perfect. I did not give this unit 5 stars. To get that rating, the instructions would need to tell me what tools I needed before I began (Phillips screwdriver, flashlight). The instructions should say explicitly whether the old Kidde mounting bracket would still work. The box should contain a cheap plastic male-female adapter to convert the old connector into the new connector. A cheap adapter would make installation a snap.

They come with an expiration date. My previous one went berserk prior to the 5 year exp date. So, I replaced it with a new exact model. My electrician explained that sometimes they just come out of the factory like a bad apple. Love, love the new one. No false alarm when cooking. What a relief! Although expensive, These are very nice smoke/carbon detectors!