0047871114085

Kidde

Model # 21010408-N

Internet # 205465829

Store SKU # 1000535877

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

$57.97 /each
  • Hardwired
  • Combination smoke and CO
  • 10 year battery back up

FREQUENTLY BOUGHT TOGETHER

PRODUCT OVERVIEW

Model # 21010408-N

Internet # 205465829

Store SKU # 1000535877

NEW Kidde 120 Volt Hardwired-Interconnected 10 Year Combination Smoke and Carbon Monoxide Alarm features two sensors in one unit. 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.

  • 120 volt AC
  • Sealed 3V lithium battery backup
  • Test/hush button
  • Voice message system
  • Peak level memory
  • Interconnected





Info & Guides

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SPECIFICATIONS

Dimensions
Product Depth (in.) 
5.5 
Product Height (in.) 
1.75 
Product Width (in.) 
5.5 
Details
Alarm Sensor Type 
Dual-Sensor 
Alarm Type 
Carbon Monoxide,Smoke 
Alarm/Detector Features 
10-Year Battery,Battery Back-Up,Hush Feature,Interconnected,Tamper Resistant,Voice Alert 
Commercial / Residential 
Commercial / Residential 
Connector/Contact Type 
None 
Included 
Batteries 
Power Source 
Hardwired 
Returnable 
90-Day 
Voltage (volts) 
120 
Warranty / Certifications
Certifications and Listings 
1-UL Listed 

MORE PRODUCTS WITH THESE FEATURES

Power Source: Hardwired
Alarm Sensor Type: Dual-Sensor
Brand: Kidde
Price: $50 - $100
Review Rating: 4 & Up
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28 Questions39 Answers

Customer Questions & Answers

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

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1 answer

Is the wiring 3 or 4 wire to be interconnected

This question is from Worry Free Hardwired Combination Smoke and CO Alarm with Voice and Lithium 10-Year Battery Back Up (3-Pack)
Asked by
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May 20, 2016
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Answer (1)

May 23, 2016
Answer: 
Hello Tish. It is a 3 wire circuit with a 120volt hot, a neutral, and an interconnect wire that is only connected from alarm to alarm and does not have any power on it. Only low voltage monitored systems usually have the 4 wire system. We are Kidde Product Support at 1-800-880-6788. Thank you for your interest.
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1 answer

I have Kidde Model : KN-COSM-IBCA smoke and carbon alarm

This question is from Worry Free Hardwired 120-Volt Interconnected Combination Smoke and Carbon Monoxide Alarm with 10-Year Battery Backup
Asked by
Kingston, Ontario, Canada
Read all my Q&A
March 29, 2016
when replacing this unit will I have to change the wire connection and the mounting bracket ? Or can I just change the alarm with a new one using the installed wiring connection and mounting bracket ?
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Answer (1)

March 31, 2016
Answer: 
Hello Dave 1951. A couple of things. First, you will need to buy your alarms from Canadian distributors such as Homedepot.ca and not Homedepot.com. The alarms listed for the USA are not listed and regulated to be used in Canada and the Canadian listed alarms are equally not listed and regulated to be used in the US. Otherwise, all alarms that are 1) Canadian listed 2) Kidde brand 3) AC hardwired and 4) Read More
Hello Dave 1951. A couple of things. First, you will need to buy your alarms from Canadian distributors such as Homedepot.ca and not Homedepot.com. The alarms listed for the USA are not listed and regulated to be used in Canada and the Canadian listed alarms are equally not listed and regulated to be used in the US. Otherwise, all alarms that are 1) Canadian listed 2) Kidde brand 3) AC hardwired and 4) smoke and carbon monoxide alarms will have the same plug and the same bracket and can replace your old alarm. Or in other words, as long as it is Kidde and hardwired and listed for use in your country, you can use any of our models. We are Kidde Product Support at 1-800-880-6788. Thank you for your interest. Read Less
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1 answer

I need to replace 7 detectors. Can I interconnect all of these on two different floors?

This question is from Worry Free Hardwired 120-Volt Interconnected Combination Smoke and Carbon Monoxide Alarm with 10-Year Battery Backup
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January 28, 2016
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Answer (1)

February 1, 2016
Answer: 
Hello Ross. Yes, you can interconnect them as long as they are all on the same 3 wire circuit with a hot wire, a neutral wire, and a communications wire going from alarm to alarm to alarm. This is Kidde Product Support at 1-800-880-6788. Thank you for your interest.
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1 answer

I currently have 7 FIREX Model FADC Item #5000's connected as multiple stations

This question is from Worry Free Hardwired Combination Smoke and CO Alarm with Voice and Lithium 10-Year Battery Back Up (3-Pack)
Asked by
Sarasota
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February 26, 2016
Can/Is this unit a good replacement for them as a Combo Smoke/ CO2 alarm Unit

I assume I just disconnect the FIREX connector with it tails from the power/interconncect wires and replace with these in the same color code, if the answer is yes
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Answer (1)

February 29, 2016
Answer: 
Hello Mr. Fiberman. The new alarms and your older alarms will not work together. You will need to take down all of the older alarms before putting in any new alarms and yes, you will have to change out the plugs and change out the brackets. We are Kidde Product Support at 1-800-880-6788. Thank you for your interest.
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CUSTOMER REVIEWS

Rated 4.1 out of 5 by 57 reviewers.
Rated 5.0 out of 5.0 by Great product After a serious carbon monoxide accident, realize the importance of having a reliable alarm. We combined this into our whole house replacement of alarms. Great to have the combination of carbon monoxide, smoke, lithium battery & interconnect to other alarms. December 8, 2015
Rated 5.0 out of 5.0 by Good Product Product was delivered within 4 days of order. Installation was very easy. I liked the drywall anchor screw, it took single anchor to attach the alarm to the wall. The testing took longer than the attachment. Hopefully these are never actually used. April 12, 2016
Rated 5.0 out of 5.0 by Easy to install, works out of the box If you have a 120 volt line connected smoke detector, this is a great product. It adds a carbon monoxide detector and a ten year lithium battery back up to your smoke detector. It was east to install, and you can forget about it. It will work for a decade and protect you and your family. I installed two in my son's apartment. The installation was problem-free. March 1, 2016
Rated 5.0 out of 5.0 by Kidde Smoke and Carbon Monoxide Alarm with Voice alert . Kidde Fire Systems is a global leader in fire and Carbon Monoxide protection, protecting people and property, from fire hazards, and they are very trust worthy in the business. They have introduced a new generation intelligent smoke and CO and heat detectors. The all new Kidde 120 Volt Hardwired-Interconnected 10 Year Combination Smoke and Carbon Monoxide Alarm features two sensors in one unit. The alarm is suitable as a single station and/or multiple station (24 devices) alarm. This alarm contains a ten-year sealed lithium battery backup, which you will never have to replace, since the Alarm expires in 10 years. In case of a problem, it will sound the alarm and also will give you a voice memo, so that we can sleep with peace of mind. April 12, 2015
Rated 5.0 out of 5.0 by Greatly Satisfied The contractor wanted 849.00 dollars to obtain and install a similar item. I was able to buy and install this item for a third of the price. Home Depot personnel where able to advise me on compatibility issues since I all ready had a similar system installed. So, I just had to replace the old alarms with the new alarms. Thank you, so much. February 16, 2016
Rated 1.0 out of 5.0 by Failures Installed five of these. Two kept beeping no matter what we did (returned them). 1 went off for no reason, a day after installation (12 feet up in the middle of the night). Two seem to be working, but for all we know they'll go off at some random time like the first one. Other reviewers had similar troubles, but we took a chance on these because this model seems to be the only one that combines 10-year, smoke and carbon monoxide, plus hard-wired. Home Depot needs to find another brand or pressue Kidde to improve this dud. August 11, 2015
Rated 1.0 out of 5.0 by 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. January 21, 2015
Rated 1.0 out of 5.0 by Already have returned 7 with low battery I was replacing all 3 of my smoke detectors. As soon as I installed them I got the low battery warning. So got 3 more and all of them were low battery. So I figured it was a bad batch and went to another home depot 2 hours away where I was visiting friends. 2 of those worked. Went yo install 3rd one and got low battery. Now I will have to go back again ugh. I don't want to have to rewire for a different brand but now I wish I did. July 30, 2015
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