First Alert OneLInk SCO501CN CO & smoke alarm

Price range:
$70.77 - $162.17
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Summary: This model was tested by our experts.
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Community icon10 people have reviewed this model.
Type: Interconnected alarms
About - First Alert OneLInk SCO501CN

The First Alert OneLInk SCO501CN is part of the CO & smoke alarm test program at Consumer Reports. In our lab tests, carbon monoxide alarm models like the OneLInk SCO501CN are rated on multiple criteria, such as those listed below.

High CO levels:
High CO levels rates a model's response to CO of 300 parts per million.

Low CO levels:
Low CO levels rates a model's response to CO of 150 ppm.

Display/voice rates the accuracy of the CO level either displayed digitally or conveyed by voice message.
About This Brand

First Alert owns the BRK branded units, and the ONELINK line of wireless, talking units. Product offerings include plug-in, battery, hardwired, and hardwired with battery-backup units. Carbon monoxide units range from $20 to $100. First Alert also offers combination units that detect carbon monoxide and smoke.

These combo units use electrochemical and photoelectric technologies. First Alert is available at Home Depot, Lowes, Walmart, Target, and at food and drug stores.

Smoke alarm prices range from $13 to $100. Product offerings include dual sensor units, which combine ionization and photoelectric technologies.

Features & Specs - First Alert OneLInk SCO501CN
info Power supply Battery
info Peak memory Yes
More features and specs
User Reviews - First Alert OneLInk SCO501CN
User Reviews
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(6 of 6 customers found this review helpful)
One Link after 7 years
Even The One In The Shed
They All Link Together
Batteries Burn Out Fast
Best Uses
My wife and I have owned 7 Onelink smoke detectors and 4 Onelink smoke/carbon monoxide detectors in our home. Even have one in the shed located about 75 yards from the house using a bridge designed to connect to the other detectors located in the house (Smartlinc Insteon bridge for OneLink smoke detectors). We have owned these 9 years, some were added after the initial purchase. The first release of the brand had a low power design and all detectors were replaced by the manufacturer at no cost. We had already used them for about 9 months. Since then they have worked great and are easy to program. Nice to know that if one goes off they all go off, that's peace of mind. Even in the shed. With standard smoke and carbon monoxide detectors, if there not close enough to where your sleeping, you may not hear the alert. <br /><br />Also, most folks aren't aware; carbon Monoxide detectors are only good for seven years. They must be replaced or they do not work. Most manufacturers now, after the detector has been used for seven years, stop working with an alert telling the user it is malfunctioning. OneLink detectors run on AA batteries, some folks have complained on previous comments that they need to replace the batteries in them once a year which is a hassle. Oh, remember, the fire service reminds you to change your clocks in the fall (north east) and change your batteries in all detectors. So batteries need to be changed yearly with most detectors anyway. Even wired detectors have batteries in them and need to be replaced.<br /><br />I am replacing my Smoke/Carbon Monoxide OneLink with new Smoke/Carbon Monoxide OneLinks now that the detectors told me they are malfunctioning, manufacturer date listed on back of detector. 7 years and 4 months after manufacturing, not bad. I would highly recommend these, even after all the years my family and I have depended on them.
How long have you owned it:
More than six months
Bottom Line
Yes, I would recommend this to a friend.
(2 of 4 customers found this review helpful)
Frustrating Product
Best Uses
I have rarely bought a product more frustrating. I bought three. The location program didn't work on any of them. I put up with these units screaming at me in the test mode, but could not get the program to work. You will have a hearing loss when you are done with the installation process.
How long have you owned it:
A month or less
Bottom Line
No, I would not recommend this to a friend.
(6 of 7 customers found this review helpful)
Effective &amp; reliable
Battery Life
Location Announced
Best Uses
Detector Error
Every bedroom
We have had these units for at least seven years. Initially, we had a problem with all units reporting low battery prematurely. All were replaced at no cost, and alkaline battery life has been about one year. (Because of the initial battery problems, I started noting the date of each battery replacement on a small piece of paper taped in the back of each unit. Since the life is sometimes a little less than a year (battery make? time unused on shelf?), I recommend replacing batteries when the units report the need. (If you are away for an extended period, run the test.)<br /><br />These detectors are located near the kitchen, near our bedroom (just my wife and I are here normally), in another furthest bedroom, and at the foot of the basement stairs. Because these units form a network and repeat each other rather loudly, that is something to keep in mind when choosing where to place them, aside from assuring that all risk areas are covered.<br /><br />The kitchen detector has gone off two or three times, properly. The third time, a house guest was cooking with oil and got the oil much too hot. There was much smoke in the air.<br /><br />Now, about a month later, the alarm spoke an announcement twice. I did not quite catch what it said. Then the kitchen alarm, by itself, beeped every minute or two. Batteries tested slightly low. New batteries (tested first) installed: alarm still beeping. Pressed the test button. The alarm announced testing, followed by the others, then the usual sequence, until I heard something like detector error reported in kitchen smoke alarm, see owners manual. Not a word about this in the one-sheet manual. Also no help at the manufacturer's web site.<br /><br />Also not in the manual. I did not want to hear the beeping once I knew what it meant, and put the battery holder out. Then I tested one of the other detectors to be sure the others were communicating. The network re-established itself without the kitchen detector. I don't know if this was necessary, but would recommend it as a precaution.<br /><br />These alarms were warranted for five years. The manufacturer's site now indicates they are warranted for seven years. I suspect the detector error is the result of fouling by too much smoke, but it could just be too old. I will know only if the others start failing.<br /><br />I intended to replace the failed unit.<br /><br />They are a bit expensive, but provide voice announcements identifying the problem and its location. The voice network feature justifies the price.<br /><br />They are easy to remove from the base, usually in order to replace the batteries (and test), and relatively easy to remount on the base.<br /><br />While the owner's manual, I now know, doesn't tell you all it probably should, that is a minor flaw.
How long have you owned it:
More than six months
Bottom Line
Yes, I would recommend this to a friend.
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