First Alert 9120B6CP 120-Volt Wire-In With Battery Backup Smoke Alarm, 6-Pack


The First Alert Hard Wired Smoke Alarms have been designed to install faster, perform better and be even smarter than before. Alarm has a large opening in the mounting bracket for easy access to wiring. Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation. Battery installation and removal can occur while the unit is mounted to the ceiling or wall via the side load battery compartment. Connection to AC power is made with a ‘Quick-Connect’ w

$ 56.10

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  1. 5 of 5 people found the following review helpful
    5.0 out of 5 stars
    Good buy, February 23, 2014
    By 
    R. Smith (Salt Lake City, Utah United States) –
    (REAL NAME)
      

    Verified Purchase(What’s this?)
    This review is from: First Alert 9120B6CP 120-Volt Wire-In With Battery Backup Smoke Alarm, 6-Pack (Tools & Home Improvement)
    We changed out the smoke alarms in our home last summer because the old ones had been in place for more than ten years. Actually, we had a handyman change them out when he was over doing a bunch of other stuff (in part, because we have a couple of really high ceilings and do not have a ladder that is even high enough to reach). He changed them out lickety-split, like a minute or two each. I believe he had to change out the base on them.

    If you buy a smoke alarm at Home Depot or Lowe’s it will cost you considerably more than buying it online–and buying in a multiunit pack (or “contractor pack”) online is a special bargain. Also, sometimes at HD or Lowe’s the selection is more limited than what you will find online. For example, I recall that they have a wide selection of (more expensive) Kidde brand devices at HD but not nearly as much to choose from by First Alert. I understand that occasionally with pretty much any brand of smoke detector you will get a lemon that beeps even when it has a good battery and even when there is no smoke. In fact, we had that happen a couple of years ago with a fairly new detector–called over a specialist to check it and he said sometimes they just start chirping for no good reason. So this is all the more reason to buy one that is inexpensive–so when you do get a lemon, it’s not very painful to throw out the old and get a new one. If you are wondering what detector to get to replace your old one, just pull off the old detector and look at the model number, then Google the model number. Most likely you will find information about whether that model number is still available or whether there is a new model number filling the same role. In our case, the model number had changed in ten years but the new model number was basically the same unit (most builders use these First Alert models or the evidently identical BRK model because they are inexpensive). A rose by any other name would be as sweet, saith the Bard of Avon.

    Some tips: (1) consider buying an extra detector unit so that if you do have one that goes haywire (starts chirping for no good reason and replacing the battery doesn’t fix the chirping), you can easily replace it; (2) you can buy 10-year lithium batteries for about $10/each at Radio Shack (and other places), and if you use these rather than regular batteries, you don’t have to change the battery every year (esp. useful for detectors mounted in very high ceilings) (I think this is a better bargain than buying a unit that comes with a “sealed” lithium battery already installed); (3) you might consider writing (such as with a Sharpie) the installation date on the back of the device (the side that is mounted against the ceiling)–this will make it easy to remember in a few years when you installed this particular one.

    My friends, stay safe, and do not cook a goat indoors on a bonfire for any reason.

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  2. Lantana Al says:
    2 of 2 people found the following review helpful
    5.0 out of 5 stars
    Easy replacement of 10+ year old 8120BL detectors, August 8, 2014
    By 
    Lantana Al (DFW, TX) –
    (TOP 500 REVIEWER)
      

    Verified Purchase(What’s this?)
    This review is from: First Alert 9120B6CP 120-Volt Wire-In With Battery Backup Smoke Alarm, 6-Pack (Tools & Home Improvement)
    I bought these to replace the aging and malfunctioning units (giving many false alarms) that came with my house. They were model 8120BL and manufactured April 22, 2004, so they were just a bit over 10 years old. You are suppose to replace these anyway after 10 years of use.

    I ordered the new units from Amazon (as the seller) on August 6, 2014. I received them on August 8, 2014. They were manufactured on July 17th, 2014 so they were very “fresh”.

    NOTE: Before installing the new units, enable the battery (pull the plastic piece out) and test it to make sure the alarm sounds using battery power.

    To replace the old units, I cut the power to the AC lines feeding them. It was then a simple matter to remove the old units and disconnect the AC power/interlink cable. I used a flat-head screwdriver to help with the disconnection of the power cable. I then loosened the screws holding the old mounting plate, removed the old mounting plate and then installed the new one (which fit perfectly using the correct notches) and tightened the screws. You don’t even have to remove the screws completely. Next I connected the power cable (I used the same cable that the old units used because they were compatible) and mounted the new unit to the plate.

    When all the units are installed, power it back on with AC power and do a test to make sure all the units sound the alarm. Also, the green LED should now be on.

    I set a date in my calendar 10 years from now to change them out again….. hopefully I’ll still be around. 🙂

    So 5 stars from me….. should anything change then I’ll update my review.

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  3. 1 of 1 people found the following review helpful
    1.0 out of 5 stars
    Piece of junk (POJ). Bought 12 of them and …, May 25, 2016
    By 
    Gocker V. (USA) –

    Verified Purchase(What’s this?)
    This review is from: First Alert 9120B6CP 120-Volt Wire-In With Battery Backup Smoke Alarm, 6-Pack (Tools & Home Improvement)
    Piece of junk (POJ). Bought 12 of them and already having to replace one after merely 2 months. They have a 3 to 4 years shelf life. Because even if they’re being sold brand new through Amazon, you cannot tell the manufacturing date for it is printed in the back of the alarm. Mine said March 22, 2011. And thus it gave me a 3-chirp beat every minute at 4 AM today. Words to the wise: DON’T BUY IT ON AMAZON BECAUSE YOU CANNOT SEE THE MANUFACTURING DATE ! If it said 2011. You’re screwed royally. Go to Lowe’s or Home Depot instead. Open up the box and look for the manufacturing date yourself.
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