Model # SA511CN2-3ST

Internet #204357240

First Alert Wireless Interconnect Smoke Detector (2-Pack)

First Alert

Wireless Interconnect Smoke Detector (2-Pack)

  • Wireless connection so when one alarm sounds, all alarms sound
  • Exclusive voice warning with programmable location
  • Batteries Included
$5291 /each

Frequently Bought Together

Product Overview

The Wireless Smoke Alarm detects smoldering fires and has a voice alarm that's proven to wake children up better than standard alarms. It also has a horn tone with low frequencies for the hearing impaired and elderly. This alarm will sound if it detects smoke even during power outages. It uses a secure radio frequency to communicate between alarms, which are perfect for linking alarms on different floors or in stairwells. No wires necessary and it's programmable with up to eleven locations. Other features include a test and silence button, a latching indicator that remembers which unit initiated the alarm and smart technology that helps reduce false alarms. The SA511B can be connected to other smoke alarms and offers 360˚ access to the smoke sensor. If one unit triggers an alarm, all smoke alarms in the series will sound. The SA511B features a perfect mount system for perfect alignment, a low battery latch and (2) silence features. The Wireless Smoke Alarm is warranted to the original purchaser for a period of 10 years. First Alert invests time and research into providing dependable and hardworking products. Committed to innovation and value, First Alert improves safety in and around the house. This product comes in a 2-pack.

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.

Compare Similar

$40.19 /each
$52.91 /each
$79.97 /package
$89.97 /bundle
Name Wireless Interconnect Smoke Detector with Voice Alarm Wireless Interconnect Smoke Detector (2-Pack) Battery Operated Wireless Inter Connectable Smoke Alarm (3-Pack) 10-Year Worry Free Battery Operated Smoke Alarm with LED Escape Light-(Bundle of 3)
Brand First Alert First Alert Kidde Kidde
Ratings (8) (9) (223) (241)
Commercial / Residential Residential Residential Commercial / Residential Commercial / Residential
Alarm Type Smoke Smoke Smoke Smoke,Smoke
Power Source Battery Battery Battery Battery
Alarm Sensor Type Photoelectric Photoelectric Ionization Photoelectric
Alarm/Detector Features Voice Alert Interconnected,Voice Alert Hush Feature,Interconnected 10-Year Battery,10-Year Battery,Escape Light,Hush Feature,No Additional Features,No Additional Features,No Additional Features,No Additional Features,Tamper Resistant,Value Pack
View Product View Product View Product View Product




Warranty / Certifications

More Products With These Features


Customer Questions & Answers

I am wanting to install some of these what type of wire do i need to run to make breaker box?

Asked by: Ross
None it is wireless no wire needed
Answered by: johny
Date published: 2017-06-21

Does atleast one of these need to be hard wired in order to communicate wireless to the rest, or ...

Does atleast one of these need to be hard wired in order to communicate wireless to the rest, or are they all just battery and still communicate
Asked by: BD
No, these do not need to hard wired in order to communicate wireless to the rest.
Answered by: CommunityAnswer
Date published: 2017-05-17

Are these dog friendly and if yes how do they sound an alarm ?

Asked by: Dem14086
The alarm is high pitched buzz/beep and my cats and my wife thought it was quite loud. So, I doubt your dog will like it much but, hey, it is not meant to be pleasant but to keep you alive if there is a fire.
Answered by: Richard
Date published: 2017-05-30

Are these each the ZCOMBO model using Z-Wave communication technology to communicate with each other and a hub like Samsung SmartThings?

Asked by: Cailein
They work with Insteon smart hub. You might check out the Insteon forums to see how they communicate.
Answered by: Bob
Date published: 2016-12-04
  • y_2017, m_6, d_27, h_3CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_10
  • loc_, sid_204357240, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 96ms

Customer Reviews

Wireless Interconnect Smoke Detector (2-Pack) is rated 4.4 out of 5 by 9.
Rated 4 out of 5 by from Product was as described. Only one screw to mount so very quick and easy. I wanted a dual smoke... Product was as described. Only one screw to mount so very quick and easy. I wanted a dual smoke detector ( photo cell and ionization ) as well as carbon monoxide but had to settle for ionization only because no one manufactures a dual detector with CO detection. How dumb is that! So I had to buy a second set of smoke detectors to cover both types of detection. The link between detectors when one detects smoke was via dip switches and easy to set and worked when tested. No fires or smoke yet so I can't tell you if they work well but I am pleased with the products so far.
Date published: 2017-05-30
Rated 3 out of 5 by from missing piece ... missing piece
Date published: 2017-05-02
Rated 5 out of 5 by from Great units easy to install and giving better protection for multiple areas The units were quite easy to program and install for the wireless connection. The video instructions on the CD were good. We have noticed that the unit near the kitchen, does not have the many nuisance alarms that our former unit (of another type) had. In our place, the wireless connection with alarm signals at all units are important, as the garage is under the living quarters. An alarm sounding in the garage would probably not be heard in the bedrooms, if it were not for the wireless connectivity in this system.
Date published: 2014-06-03
Rated 5 out of 5 by from Good Price I purchased this as a replacement and add on to the system I already have. Wireless interconnect is a nice feature. Home Depot had the best price I could find.
Date published: 2016-07-26
Rated 4 out of 5 by from Good smoke detector Nice knowing if there is a fire in some other part of the house. Not easy to program.
Date published: 2016-10-18
Rated 5 out of 5 by from smoke detectors that are linked. We have 4 levels in our home, Great to have detectors that will alert the other three smoke detectors when one is activated.
Date published: 2015-12-09
Rated 5 out of 5 by from Great product!! I love the smoke detector. I purchased 3 packs for 3 bedroom, basement, living room and hallway. I had trouble getting them interconnected, but I finally got to work. They were expensive but they are worth it.
Date published: 2016-03-23
Rated 5 out of 5 by from keeping my Family Save The smoke detectors was easy to program. I know that we will be safe if there was to be a fire in our home,because its loud and is placed in each room of the home. The price wasn't bad because it came in a two pack with a saving of $15 each.
Date published: 2015-03-24
  • y_2017, m_6, d_27, h_10
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_9
  • loc_, sid_204357240, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 106ms