5 out of 5
BRK First Alert 5268511 First Alert CO5120BN Hard-Wired Carbon Monoxide Alarm with Backup
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Product Description
The BRK First Alert CO5120BN is a hard-wired T4 carbon monoxide alarm with battery backup.
OVERVIEW
The BRK First Alert CO5120BN is a hard-wired carbon monoxide combo alarm with battery backup. It features a CO sensor, Intelligent Sensing Technology™ for fewer unwanted alarms, an 85dB horn, 9V battery backup, side-load battery drawer, two silence features and is interconnectable with up to 18 devices. Applications include residential and institutional applications including hospitals, hotels, motels, dormitories and other multi-family dwellings.
The Intelligent Sensing Technology" system is designed to reduce nuisance alarms. The "Latching Alarm Indication" remembers which unit initiated an alarm. When interconnected, the unit that triggered the alarm rapidly flashes its red LED indicator. After the alarm condition subsides, the initiating unit will store in memory or "latch" the information and begin to flash the red LED indicator once every 5 seconds.
The "Smart Interconnect" feature allows the unit to be interconnected to other BRK CO and smoke alarms. If there is a smoke event, the interconnected CO5120BN horn pattern will emit the T4 alarm sound, the same sound as a smoke alarm (4 beeps, pause, 4 beeps). If there is a CO event, the interconnected CO alarms will sound with their normal horn pattern. Battery installation and removal can occur while the unit is mounted via the side load battery compartment.
Additional Details
MANUAL
- Hard wired for installation by a licensed electrician.
- T4 alarm pattern with loud 85 decibel alarm.
- Reduced nuisance alarms with Intelligent Sensing Technology.
- Interconnectable with up to 18 BRK alarms.
- Battery backup for audible alarm.
OVERVIEW
The BRK First Alert CO5120BN is a hard-wired carbon monoxide combo alarm with battery backup. It features a CO sensor, Intelligent Sensing Technology™ for fewer unwanted alarms, an 85dB horn, 9V battery backup, side-load battery drawer, two silence features and is interconnectable with up to 18 devices. Applications include residential and institutional applications including hospitals, hotels, motels, dormitories and other multi-family dwellings.
The Intelligent Sensing Technology" system is designed to reduce nuisance alarms. The "Latching Alarm Indication" remembers which unit initiated an alarm. When interconnected, the unit that triggered the alarm rapidly flashes its red LED indicator. After the alarm condition subsides, the initiating unit will store in memory or "latch" the information and begin to flash the red LED indicator once every 5 seconds.
The "Smart Interconnect" feature allows the unit to be interconnected to other BRK CO and smoke alarms. If there is a smoke event, the interconnected CO5120BN horn pattern will emit the T4 alarm sound, the same sound as a smoke alarm (4 beeps, pause, 4 beeps). If there is a CO event, the interconnected CO alarms will sound with their normal horn pattern. Battery installation and removal can occur while the unit is mounted via the side load battery compartment.
Features:
- Latching alarm indicator remembers which unit initiated an alarm
- Intelligent Sensing Technology reduces nuisance alarms
- 85dB horn
- T4 sound pattern
- Smart Interconnect is interconnectable to both BRK smoke and CO alarms
- Two silence features can silence the low battery chirp up to 8 hours or temporarily silence and unwanted alarm
- Quick, easy installation
Additional Details
| Feature | Details | |
|---|---|---|
| Brand | First Alert | |
| Mfg part # | 5268511 | |
| UPC | 029054856173 | |
| Warranty | Seven year limited warranty | |
| Weight (lbs) | 0.57 | |
| Battery operated? | Yes (batteries optional) | |
| Batteries included? | Yes | |
| Battery details | (1) 9V Alkaline | |
| Country of Manufacture | Mexico | |
| System | (no system / stand-alone) | |
| Alert Type(s) Vibration Flashing Light Loud Audible Low Vision / Deaf-Blind | No No Yes No | |
| Transmitter / Receiver | Transmitter | |
| Alert Trigger(s) Baby Cry Carbon Monoxide Mobile / Smartphone Doorbell / door knock Motion Pager / SOS Phone / VP Smoke / Fire Sound Severe Weather | No Yes No No No No No No No No | |
| Expandable | Yes | |
| Portable | No | |
| Battery backup | Yes | |
| USB charger | No |
MANUAL
- User Manual - Download
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
Product Warranty
This item has seven years limited warranty.
Return Policy
Return is subject to a restocking fee of $8 per item. Return could only be applied within 30 days after delivery.
Need more information?
Our staff are available to answer any questions you may have about this item
Our staff are available to answer any questions you may have about this item
Customer Reviews
By Kristy D.
Date: June 03, 2024
We have these in all our homes/rentals.
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By HZ
Date: June 02, 2024
Have had a series of these since 2020. They are hardwired, in conjunction with the non-CO version of the alarm. We've been through many of them, maybe 8 or more. If you like getting false alarms, (we've had more than 20 in the last four years) then these are the alarms for you. I don't know what the 'battery low' chirp sounds like- never heard it. But in the dead of night at all months of the year, the whole house will light off with the sound of 6 alarms screaming about nothing. After ripping the actual offender off the ceiling in a stupor, which takes time, I tear the batteries out to reset it. When putting the batteries back in, they've always worked fine (I replace them all the same). I also inspect the sensors the next day, and there's never been dust or any of the other "you'll get false alarms if..." conditions listed. I clean them and put them back up, just to have them kick off again. Then they go into the trash.Why do I keep them? It was expensive to get them all installed and hard-wired, and competitors use different plugs, etc. At this point, I'd almost rather just unplug them all and rely on my own senses to know the house was burning down around me. Besides, we don't actually think there's really a fire in the house after all the false alarms.The cheapo battery-powered alarm that was in the house when we moved in has never given a false alarm despite being about a foot from one of the hardwired ones that does. It's on its second preventative set of batteries without ever having complained.
Rating: 
[1 of 5 Stars!]
[1 of 5 Stars!]
By JBC
Date: May 04, 2024
Ease to set up, no problems
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
By jenksdrummer
Date: May 03, 2024
I didn't know there was such a thing in residental as having a hardwired smoke detector, until I pulled one down in the house and found 120VAC wiring. I just bought a 6 pack of battery powered ones. Well, drawing board. Found this, ordered this, installed it super easily; replacing the adapter ring and as mine was at a junction box, it was just a matter of loosening the screw and sliding this in place; then tighten it back up, then swapped the wiring easily as well, with the new wire nuts provided.Easy.Testing it, it's interesting hearing the lower pitch this goes off with. Every room has a detector so if the house actually does catch fire or have a CO issue, it'll be a harmony of concerns.One of the ratings item is 'accuracy' - not sure how to vote that one...lol...hope I never do!
Rating: [4 of 5 Stars!]
[4 of 5 Stars!]
By Nick
Date: May 03, 2024
I bought these because we were having issues with the smoke detectors going off randomly. It was happening so badly that we had to have the fire department come out to make sure there wasn't carbon monoxide or anything we were missing.While there they were able to let me know that the number of beeps that we hear for the detector can often times be informative for what the alert is about. There are also lights on the detector that can indicate if there is a problem or if it needs to be replaced (according to them).I replaced 2 of the detectors that we had like this and it was as easy as doing a hot swap. We haven't had any issues since then. The detectors that we replaced were from when the house was built in 2020 and I don't feel like they should have gone bad already which is why I docked this 1 star for durability.
Rating: [4 of 5 Stars!]
[4 of 5 Stars!]
By Rebecca I Lafaialii
Date: April 29, 2024
Replacement set. Easy to install. Came with batteries.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]