Kidde KN-COB-IC Hardwire Carbon Monoxide Alarm with Battery Backup, Interconnectable


Ac wire in carbon monoxide alarm, that warns you & your family of dangerous carbon monoxide levels, it includes multiple contractor friendly features to ensure easy installation & minimal troubleshooting, this alarm interconnects with up to 24 Kidde devices of which 18 can be initiation, including smoke alarms, Co alarms & heat alarms on 1 wiring network, includes a 9V battery backup, 5 year limited warranty. This product adds a great value. Product is highly durable and very easy to use. This p

$ 20.96

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  1. 6 of 6 people found the following review helpful
    4.0 out of 5 stars
    Kidde/Firex KN-COB-IC Hardwire Carbon Monoxide Alarm with Battery Backup, January 11, 2015
    By 
    SJK
    (TOP 1000 REVIEWER)
      

    Verified Purchase(What’s this?)
    This review is from: Kidde KN-COB-IC Hardwire Carbon Monoxide Alarm with Battery Backup, Interconnectable (Tools & Home Improvement)
    I added one of these hardwired Kidde/Firex CO alarms in our basement in the general area of the oil burner just in case there is ever a problem with flue gasses backing up. I have it interconnected with two other KN-COB-IC carbon monoxide alarms and four Kidde/Firex SA320CN Dual-Sensor smoke alarms located throughout the rest of the house. This CO alarm has a 9v battery backup in case of power interruption and will sound along with the other interconnected CO alarms when one of them detects a high CO level. It has its own distinct sound pattern to differentiate it from the sound the smoke alarms make. However, this CO alarm is apparently designed so that it will not also sound the interconnected smoke alarms, which would mean if you only had one of these CO alarms installed in a remote location of your home, like a basement, it may not be able to alert people in other areas of the building when it activates. So, the ideal solution would be to have one of these interconnected CO alarms on each floor in addition to smoke alarms. The alarm has a built in end of life notification feature that alerts you when it needs replacement with two chirps every 30-seconds. The Amazon product description above says this occurs after seven years of operation, but the actual User’s Guide that came with it says ten years, so not sure which is correct. Overall, this CO alarm seems decently made and was fairly reasonably priced. Of course I hope to never actually have it activate from high CO levels in our home, but it’s good to know it is there just in case.

    Update: According to Kidde’s website, the KN-COB-IC carbon monoxide alarms manufactured as of 2013 now have a 10-year end of life cycle, not 7-years as indicated in the product description above.

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  2. Plain Jane says:
    2 of 2 people found the following review helpful
    5.0 out of 5 stars
    Nice looking unit, instructions say this latest version should last 10 years., April 11, 2015
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    Verified Purchase(What’s this?)
    This review is from: Kidde KN-COB-IC Hardwire Carbon Monoxide Alarm with Battery Backup, Interconnectable (Tools & Home Improvement)
    Good deal – I replaced 3 of these that were 6 & 7 years old with brand new ones. I didn’t like the look of the old wire harnesses and the mounting plates were a bit discolored so I replaced everything. Took a few minutes per unit – easy. A family member had a similar one acting strange so they called the 800 number on the back of the unit and Kidde shipped them a new one no questions asked. That is why I stuck with Kidde – that is great customer service. BTW, new ones say they are good for 10 years. Really old ones were 5 years, then they switched to 7 years, now they are 10 years. I didn’t know exactly what my old ones were so I just replaced everything.
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  3. ringdingman says:
    6 of 6 people found the following review helpful
    4.0 out of 5 stars
    Carbon Monoxide Alarm, February 26, 2011
    By 

    Verified Purchase(What’s this?)
    This review is from: Kidde KN-COB-IC Hardwire Carbon Monoxide Alarm with Battery Backup, Interconnectable (Tools & Home Improvement)
    My home has two of these carbon monoxide detectors hard wired and after unsuccessfully trying fresh batteries, realized after seven years it was time to replace this unit.

    Trying to locate this model number in the local lumber yards proved futile so after checking Amazon and finding exactly what I needed, I ordered one and I received it the next day.

    Unfortunately, I did not realize these detectors really have a shelf life of seven years because within one week of replacing the first alarm, the second one began to chirp. At least I didn’t have to try the lumber yards again. Went back to Amazon, ordered another one and got it the next day at a price that was $5.00 less than the first one!

    As an aside, a few days later, my neighbor’s carbon monoxide alarm began to chirp. His home was built at the same time as mine (seven years), he knew I had just changed mine so I recommended he order two which he did. He changed the first and again within a week, the second began to chirp.

    Bottom line, if you have more than one unit and they’re close to seven years old, change them both.

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