Model # 21010408-N

Internet #205465829

Store SKU #1000535877

Kidde Worry Free Hardwired 120-Volt Interconnected Combination Smoke and Carbon Monoxide Alarm with 10-Year Battery Backup
0047871114085

Kidde

Worry Free Hardwired 120-Volt Interconnected Combination Smoke and Carbon Monoxide Alarm with 10-Year Battery Backup

  • Hardwired
  • Combination smoke and CO
  • 10 year battery back up
$59.97 /each

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Product Overview

NEW Worry Free Kidde 120 Volt Hardwired-Interconnected 10 Year Combination Smoke and Carbon Monoxide Alarm . The alarm is suitable as a single station and/or multiple station (24 devices) alarm. This alarm contains a ten-year lithium battery backup, removing the need to replace batteries in a hardwired unit and carries a limited 10 year warranty.

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Customer Questions & Answers

What type of smoke detector is in this unit....ionization or photoelectric?

Asked by: ALinNC
CAUTION: MASSACHUSETTS requires a photoelectric alarm in all residential situations. This ionization device has limited use in MA and in the few situations where it could be installed, it would need a photoelectric alarm mounted next to it.
Answered by: wsfdgreen
Date published: 2016-12-14

can the battery be changed??

after ten years
Asked by: john
Not without breaking open the unit and voiding the warranty. Sealed unit is not designed for user battery replacement. Battery life > 10 years and built-in warranty timer means you should never have to replace the battery for the useful warranted life of the unit (10 years).
Answered by: MechMan
Date published: 2015-11-24

How many wires in connector 2 or 3?

Product Title, Description, & Specs state this unit is "Hard-wired", however Specs then list the "Connector Type" as "None". Does this unit have 2-wire or 3-wire connection?
Asked by: kim
Three
Answered by: MM
Date published: 2016-12-06

I have a 2 story colonial which is hardwired with regular smoke dectectors on all levels. One in basement, one on main floor and one in each room

upstairs as well as the hallway upstairs. How many smoke and co detectors are necessary in this design? And can the Kidde worry free be installed where I now have BRK Electronics model 4120B?
Asked by: bigJim
I replaced all three of mine with the the hard wired combination smoke and co alarm with voice and ten year lithium battery. No more night time beeps when the 9 volt expires!
Answered by: BAT3
Date published: 2016-05-11
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Customer Reviews

Worry Free Hardwired 120-Volt Interconnected Combination Smoke and Carbon Monoxide Alarm with 10-Year Battery Backup is rated 4.2 out of 5 by 74.
Rated 1 out of 5 by from Piece of junk This combination smoke.co2 detector has a sealed 10 year lithium battery, the minute we installed the unit the battery noted it was no good.
Date published: 2016-10-18
Rated 1 out of 5 by from Battery DOA Purchased 2 of these unit, one of the packages was beeping non-stop (still in packaging). Once I installed it, which a bit of a trail because of where the old alarm was, the unit said battery something or other. According to the packaging this battery should have a 10 year life, will it didn't even have a few minutes. The other unit so far so good but I'm wary of the unit, again too much of a pain to remove if not absolutely necessary. Notice other feedback says units batteries are also DOA. This one of the most expensive units available at HD. Battery should be protected until actually installed then activated, pull-tab or something like that.
Date published: 2015-01-22
Rated 5 out of 5 by from I replaced an existing Kidde hard wired smoke only alarm with the combination unit. The replaceme... I replaced an existing Kidde hard wired smoke only alarm with the combination unit. The replacement was an exact plug & play fit for the existing smoke only unit . Both Smoke and Carbon Monoxide alarms tested fine and there were no negative effects to the other smoke only units located in other areas of the house. This was an easy upgrade and I will start replacing the other smoke only alarms were needed.
Date published: 2016-12-06
Rated 5 out of 5 by from This product is a good value in that you get two alarms in one. Easy to install and I like the i... This product is a good value in that you get two alarms in one. Easy to install and I like the idea of not having the annoying chirping noise every few years due to spent batteries. I installed two alarms in my condo and within ten minutes one alarm starting giving a low battery indication. I exchanged this item to Home Depot and the replacement alarm works just fine.
Date published: 2016-12-06
Rated 5 out of 5 by from I would guess that most people only review this smoke alarm if they have issues so after a month ... I would guess that most people only review this smoke alarm if they have issues so after a month of having three installed I am happy to say that these are great. No false alarms. Easy to wire in myself. Trusted company. 5/5 would recommend.
Date published: 2016-11-08
Rated 5 out of 5 by from Great replacement Old CO detector over furnace expired. Replaced with this combined CO/Smoke detector. Exceptionally easy instructions and installation. Peace of mind!
Date published: 2016-12-27
Rated 5 out of 5 by from The detectors were very easy to install..I did it myself. Very happy to have the 10 yr battery a... The detectors were very easy to install..I did it myself. Very happy to have the 10 yr battery and also the voice tells you if its fire or co.
Date published: 2016-11-22
Rated 5 out of 5 by from Easy to install (read directions). Works as advertised and doesn't go off every time you use the ... Easy to install (read directions). Works as advertised and doesn't go off every time you use the toaster. LOL
Date published: 2016-12-27
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