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First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup
Availability:
In Stock
Price:
$75.99
$35.00*
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| Part No: | B000EVO9D4 |
| Manufacturer: | First Alert |
| MFG Part: | SA521CN |
| Customer Rating: | 4.5 / 5.0 |
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- Hardwire wireless smoke alarm with battery backup
- Uses photoelectric sensing technology which is environmentally friendlier
- Low battery warning; simple to use silence/test button; pullout battery drawer
- Add additional battery operated First Alert ONELINK alarms to expand without wires
- 120-volt with 2 AA battery backup
In the event of a fire every second counts. If a fire were to begin in your basement and the alarm there sounded, you may not hear it right away if you're sound asleep two floors up. With traditional battery-operated alarms, you lose valuable time waiting for the smoke to rise to another alarm, on another level, before the alarm on your floor sounds. But with First Alert ONELINK alarms, if one detects danger, they all sound. This can alert you sooner, and it increases your chances of getting out safely.
Until now, alarms that could signal each other were only available in homes with hardwired alarms requiring installation from an electrician. But First Alert ONELINK alarms communicate without wires.
The First Alert ONELINK SA501CN alarm uses photoelectric sensing technology which is environmentally friendlier and which reduces nuisance alarms, making it ideal for cooking areas. It is also great for sensing slow smoldering fires quickly. The alarm includes a low battery warning and a super bright escape light. You can easily expand an existing interconnected 120-volt AC system by replacing one alarm in the series with this alarm. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. The AA batteries are easy to install in the convenient pullout battery drawer. Two AA batteries included.--Bree Norlander
What's in the Box
One smoke alarm, two AA batteries, and user's manual
| First Alert SA521CN | 2009-12-07 | 5 / 5 |
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| I installed eight of these and it was a simple process. All eight are in sync and work well. They are much better than the low cost units they replaced. |
| Unpredictable? | 2009-11-27 | 4 / 5 |
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I have 7 of the First Alert SA520 Onelink units that were installed in my home 2.5 yrs ago. They were easy to set up although getting power to each unit in an older, 3-story home was the biggest challenge. They link to each other well. You may wish to install them in a particular sequence if using many of them on different floors. That way when the first one goes off, you might have a fighting chance of knowing which one it is since that one sounds off first. The reason I say this is because ours have begun going off in the middle of the night for no apparent reason. It has happened 4 times in about 4 months, and we never know when it will happen. They start sounding the alarm but shut off after about 20 secs, by themselves. We thought we had one defective unit but after removing it several days ago, they went off again tonight (6pm). All the other times have been when we were dead asleep, and boy is that a shock! These units are LOUD!
Gave it four stars for loudness and ease of setup. Minus one star for this bad habit I've described. Anyone know what might be causing this? Can they be tripped by RF interference? Says on the back that they "have to accept interference even if detrimental." (Who thought that one up?) |
| Outstanding customer service | 2009-10-22 | 4 / 5 |
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| I replaced my 15 year old alarms with several models, including this one, from BRK/First alert. Everything worked great, including the wireless ones talking to each other; except for the wired/wireless unit. I though the unit was defective and BRK sent me a replacement immediately. I still had problems. BRK is sending me another replacement; but suggested that it was a wring issue with an old dimmer switch on the same circuit. I still need to replace the dimmer; but just wanted to highlight the great customer service. |
| Easy to intall and link up | 2009-07-16 | 5 / 5 |
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| Looks like a quality product that installed easily as long as you can do basic wiring. I like the slide out battery door. Not to hard to get them to talk to each other and they all went off when I pressed the test button (after a few second delay). |
| work so far | 2009-02-04 | 5 / 5 |
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| I ordered several and have set up two of them so far which is easy to do. They work in theory. Don't know how they will do in a fire and I hope never to find out. |
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