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Onelink Wireless Hardwired Smoke Alarm

  Onelink Wireless Hardwired Smoke Alarm
 
First Alert Smoke Alarm SA521CN-3ST

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Regular Price: $79.99
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Onelink Wireless Hardwired Smoke Alarm

The latest advancement in a series celebrated for its intuitive use of technology, the Onelink collection offers an abundance of options when it comes to creating the ideal safety network. To expand protection to include both existing and hardwired alarms and new wireless alarms, simply replace one existing hardwired alarm with Onelink, and then add Onelink battery operated alarms elsewhere. Should one Onelink alarm sound off, the remainder of your Onelink alarms will also trigger simultaneously and alert you and your home to any potential dangers. This feature allows for the maximum in whole home protection.

The realization of Photoelectric Smoke Sensing Technology will effectively reduce the number of nuisance alarms triggered by cooking smoke and shower steam. This alarm comes equipped with a Mute Button that serves the dual purpose of quickly silencing your alarm as well as testing its function. Onelink Wireless Battery Operated Smoke Alarms also comes equipped with an EZ access battery door that removes the hassle and burden of collecting your alarm from the ceiling and replacing its batteries. The combination of an optional theft-prevention lock and an increased emphasis on the unit's 85db sound output establish peace of mind, while the inclusion of an anti-theft prevention lock all but guarantee the safest of experiences. This alarm comes with a 10-year limited warranty and meets UL Standards.

This ONELINK wireless alarm is for you if:

You want to build a safety network of interconnected alarms in your home without the cost and hassle of wiring.
You want to your existing hardwired alarms to communicate with new Onelink wireless alarms to expand protection.

Where To Place Smoke Alarms: One on every level of the home and one in each sleeping area.
First Alert Smoke Alarm SA521CN-3ST

Onelink Wireless Hardwired Smoke Alarm Features:

Wireless interconnectivity, wirelessly connect up to 18 Onelink alarms in your home and when one sounds, they all sound for increased whole-home protection.
120v ac hardwired, easily replace one existing hardwired alarm with Onelink SA521 and then add Onelink battery operated alarms to connect wireless alarms with hardwired alarms--when one sounds, they all sound.
Battery backup, provides consistent protection for added safety during power outages.
Photoelectric smoke sensing, optimal protection from smoldering fires. plus, reduces false alarms like those caused by cooking fires and shower steam.
Mute button, mutes unnecessary alarms immediately. also tests alarm function with same button.
Eco-friendly, completely recyclable as an electronic device.
EZ access battery door, no need to remove alarm from ceiling to change battery.
Optional theft-prevention lock, when activated, batteries and/or alarm cannot be removed without proper tools.
2AA batteries included.
Loud 85db alarm.
10-year limited warranty.
Smoke alarms should be replaced every 10 years for maximum protection.
Meets UL217 standard.
FCC compliant.

Review Review this product

Rating: 4.74074074074074/5Rating: 4.74074074074074/5Rating: 4.74074074074074/5Rating: 4.74074074074074/5Rating: 4.74074074074074/5 average customer rating based on 27 reviews

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - 07/13/2014
Reviewer: Patricia Shewmake
Great

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 Peace of Mind - 03/25/2014
Reviewer: Francis Marino
I am very happy with the onelink smoke detectors. They are easy to program and I like the feature where all will sound when one detects smoke.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 Onelink easily interfaces with existing detectors - 11/24/2013
Reviewer: Basil Jones
I easily found the information I needed to make my purchase decision for replacing my old detectors and expanding with additional detectors. I didnt realize they needed to be replaced after 10 years and I bet most people dont. If one of my original wired detectors hadnt failed, I probably still wouldnt know. Ordering was easy and I received the detectors I ordered in just a couple of days. My only complaint is that the detectors are a bit pricey. They were very easy to install and set up.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - 11/15/2013
Reviewer: Gail Thompson
It works great with our other hard wired alarms.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - 05/10/2013
Reviewer: Terremce Townsend
Very easy to install, program and test. Well worth the money.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 One link wireless - 04/02/2013
Reviewer: Jason  Few
This product is awesome. All I had to do was run one circuit for this smoke and get battery smokes for the rest of the house. Fast, easy, and worth the money.

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - 03/26/2013
Reviewer: Steve  Schneider
quick at getting product delivered

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - 03/05/2013
Reviewer: Ashley Smith
Great product save us lots of money from having to wire all alarms for our Childcare business! To meet state codes!

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 wireless / ac smoke - 03/04/2013
Reviewer: MARK HARTMAN
I like the product because it allows us a UL solution to battery / interconnected alarms

Rating: 2/5Rating: 2/5Rating: 2/5Rating: 2/5Rating: 2/5 - 03/01/2013
Reviewer: Art Kibby
We had 3 previous hardwired alarms, so we replaced them with these. They dont seem to communicate with any of the battery powered ones or with each other, even though we set them up per the instructions

Customer Service Response:
We're sorry for the trouble you're experiencing. If you haven't, try contacting customer support and they may be able to help you find a solution.

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Q: What is a mesh network and how do the Onelink smoke detectors intercommunicate?

A: First Alert ONELINK smoke alarms operate on a "mesh network" to integrate smoke alarms for better safety and response in an emergency. All of the First Alert ONELINK alarms send, receive and resend the initiating alarm's signal. Why is this important? Let's say the signal is blocked from reaching the master bedroom alarm either by distance or some obstruction in the home. With First Alert ONELINK, the mesh network of alarms re-routes and resends the signal via the other alarms, providing a greater chance all alarms will receive the signal. The "mesh network" is a more reliable means of wireless communication.


Q: What is the proper placement of smoke alarms?

A: It is important that you have the proper placement for your smoke alarms. Install your alarms at least 20 feet from appliances like furnaces and ovens, which produce combustion particles. Alarms should be at least 10 feet from high humidity areas like showers and laundry rooms, and at least 3 feet from heat/AC vents. Be sure to install a smoke alarm in each bedroom, one at the top of each stairwell, and one on every level.


Q: My smoke alarm keeps chirping and beeping. Why does my smoke alarm chirp intermittently?

A: It is likely that the reason your smoke alarm keeps chirping and beeping is that the battery is low. Whenever your smoke alarm keeps chirping, replace the battery immediately.

Other reasons include: It could be a different device or appliance such as a security system, monitor, carbon monoxide alarm, or other device which has a similar low battery or alert signal. Some of the same factors that cause unwanted alarms can cause intermittent alarms: dust and insects in the alarm or power interruptions in hardwired alarms. Improper wiring on AC or AC/DC smoke alarms. AC alarms will chirp every 5 seconds if the interconnect wire is grounded. The orange interconnect wire should NEVER be grounded; it should only be used to interconnect other smoke alarms or compatible devices.




Q: Why doesn't my smoke alarm sound when I push the test button?

A: It is important that you frequently test your smoke alarms. When you are testing your smoke alarm, there are a number of reasons why the alarm might not sound:

  • You may not be holding the test button down long enough. Try holding it down for up to 10 seconds (20 seconds on photoelectric models) .
  • Your battery may not be installed properly or snapped all the way in place. Even if the alarm sounded briefly when the battery touched the terminals, you still need to make sure it is snapped securely in place. If the battery is loose, in cannot power the smoke alarm properly. After installing new batteries, be sure to test your smoke detector.
  • Your AC power may not be on. AC and AC/DC units will have a power indicator light (red or green) that shines continuously when they are receiving electrical power.
  • If you have a 10-Year model, the smoke alarm may not have been properly activated. If the tab broke away before the alarm was activated, you can use a toothpick to move the switch over to test the alarm.


Q: Why does my smoke alarm go off when I install a battery or turn on the AC power?

A: It is normal for smoke alarms to go off and sound briefly (up to 5-10 seconds) when you install a new battery or when they are powered up. If the alarm continues to go off and no smoke is present, the cause may be one of the following:

  • There may be insufficient battery power, try new batteries.
  • Problems with voltage or insufficient electrical power (brown out) may cause a continuous weak sounding alarm. For AC or AC/DC models, temporarily disconnect power at the service panel until the brown out is over. If you do not restore the AC power, your smoke alarms cannot warn you of a fire.
  • Incompatible warning device. If an incompatible alarm or auxiliary device is linked into a series of AC or AC/DC smoke alarms it may cause the system inadvertently go off.


Q: My smoke alarm keeps chirping, even with a new battery. What is causing this?

A: There are a number of possible causes for your smoke alarm to keep chirping even with a new battery.

  • It is possible that your smoke alarm "silence" button was pushed by mistake. The alarm will now "chirp" once a minute for up to 15 minutes before resetting.
  • Are you sure it's the smoke alarm? Funny to ask, but other devices have similar low battery chirps or warning tones.
  • Your "new" batteries may not be fresh. If batteries are stored, especially in cold areas like refrigerators, they lose their charge more quickly. Always check the freshness date on the package when buying new batteries. Keep plenty of replacement batteries on hand so that you are sure to always be protected by your smoke alarms.


Q: I lost my First Alert smoke alarm owner's manual. How can I get a new one?

A: First Alert smoke alarm owner's manuals are available online for download at no cost. Find your alarm in our Smoke Alarms section.


Q: Why does the National Fire Protection Association (NFPA) recommend that home smoke alarms be replaced after 10 years?

A: Smoke alarms have a limited life. Although each smoke alarm and all of its parts have passed many stringent tests and are designed to be as reliable as possible, any of these parts could fail over time. Therefore, you must test the devices weekly. The unit should be replaced immediately if it is not operating properly. The performance of smoke alarms older than 10 years is simply not reliable. To ensure your family's safety, all carbon monoxide and smoke/CO combination alarms need to be replaced every 5-7 years. All smoke alarms need to be replaced every 10 years.

If it's time to replace your alarms, consider the NEW 10-Year Life series and never have to worry about a battery replacement for the life of the alarm.10-Year alarms are available in smoke,carbon monoxide and combination alarms.


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