Model # SA511B

Internet #203658771

First Alert Wireless Interconnect Smoke Detector with Voice Alarm

First Alert

Wireless Interconnect Smoke Detector with Voice Alarm

  • Wireless connection so when one alarm sounds, all alarms sound
  • Exclusive voice warning with programmable location
  • Photoelectric smoke sensing technology
$4019 /each
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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 Degree 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.

  • Interconnects with other alarms without wires
  • 1-button silence and test
  • Onelink alarms by First Alert feature a wireless connection so when one alarm is triggered, all alarms sound
  • Photoelectric smoke sensing technology reduces nuisance alarms
  • Exclusive voice warning with location in addition to horn
  • Operates on 2 AA batteries
  • Comes with a 10 year limited warranty

Info & Guides

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Name Hardwired Smoke Alarm with Escape Light Wireless Interconnect Smoke Detector with Voice Alarm 120-Volt AC Wireless Smoke Detector with Photo-Electric Sensor Wireless Interconnect Smoke Detector (2-Pack)
Brand First Alert First Alert First Alert First Alert
Ratings (6) (8) (1) (13)
Power Source Hardwired Battery Battery Battery
Alarm Sensor Type Photoelectric Photoelectric Photoelectric Photoelectric
Alarm/Detector Features Battery Back-Up Voice Alert Battery Back-Up Interconnected,Voice Alert
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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Alarm Sensor Type
Alarm Type
Alarm/Detector Features
Voice Alert
Commercial / Residential
Connector/Contact Type
Pack Size
Power Source
Voltage (volts)

Warranty / Certifications

Certifications and Listings
No Certifications or Listings

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Customer Questions & Answers

Does it pot out a beam of light that scans room???

Asked by: Mandy
Yes, this unit uses Photoelectric smoke sensing technology ( emits a beam of light which is received and processed).
Answered by: CommunityAnswer
Date published: 2017-03-03

What does 5 chirps denote, low battery?

Asked by: Roh72
I Had the same 5 Chirp signal, and just contacted the First Alert Co. that signal "end of life" for the unit. Contact them with Model# and Manufacture Date on the back side of alarm to see if your unit is under warranty. FYI- they also told me Low Battery signal is only 1 chirp
Answered by: SU00
Date published: 2017-02-03

Can we integrate and connect this wireless smoke detector with a network of hard wired smoke detectors already installed in a home?

Our existing home is already wired with a network of smoke detectors. We are challenged by physical barriers to wire in another 2 smoke detectors. Can we add two wireless smoke detectors and somehow integrate them into the existing network of smoke detectors so if the added wireless smoke detector alarm goes off the other smoke detectors in the house will also sound the alarm?
Asked by: BroT

How do you silence the 'alarm network'?

If you have "ten" of these wireless alarms networked together, and one triggers, which sets off all of the alarms, will resetting/silencing the triggered alarm silence all of the others? Or do you need to reset all of the alarms separately? Thanks.
Asked by: McChuck
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Customer Reviews

Wireless Interconnect Smoke Detector with Voice Alarm is rated 4.8 out of 5 by 8.
Rated 5 out of 5 by from SUPERIOR PRODUCT !! I bought 4 of these and the matchng Carbon Monoxide Dectector. Instructions were good and installation was easy. This is an excellent product for homes that are not hard wired for smoke dectectors. Overall I was extremely pleased with the quality and performance of the product, and the price seems in line with the ability of the product. Great job First Alert !! I'm impressed !!!
Date published: 2013-09-13
Rated 5 out of 5 by from Performs as advertised We installed a combination of fifteen interconnected hard-wire and wireless smokes along with three interconnected wireless CO detectors. All eighteen linked together just as advertised and worked flawlessly. Here's to hoping we never need them but if we do, then we can sleep comfortably knowing we're well protected.
Date published: 2013-10-15
Rated 4 out of 5 by from solves the problem. Installed the new smoke detector close to existing one and lower pitch alarm is more agreeable to my hearing loss capabilities.
Date published: 2015-12-08
Rated 5 out of 5 by from Easy to install, easy to setup Needed some simple combo fire/smoke alarms for a new install. Without going overboard on budget, found this product to be a good compromise on features and price. It even lets you set the unit locations so it can tell you where the trouble is (which hopefully will never happen). Install is straight-forward, two drywall studs and threaded screws. Just place the bracket to check hole locations, drill, place studs and screws and all done. Setup is even easier, after closing the tray (batteries included by manufacturer), the unit guides you through the process by voice prompts. Takes less than 5 minutes to set up location, and run a quick test. Setting up other units for interconnect is easy too, just one extra step to link to the first unit.
Date published: 2015-05-09
Rated 5 out of 5 by from This gets the job done The setup was easy. I even have all 5 detectors linked to an Insteon system. When the alarm goes off, you won't ignore it... The alarm beep and the voice is very loud. These are good, and they satisfy the building codes.
Date published: 2015-12-29
Rated 5 out of 5 by from Wireless Interconnect Smoke Detector with Voice Alarm I ordered and installed five wireless smoke detectors recently due to an upcoming bathroom remodeling project. They were easy to install.
Date published: 2016-08-16
Rated 5 out of 5 by from Great smoke detector I have a big spread out house and these wireless interconnected fire alarms work well. One goes off they all off and say where the alarm that went off is located. Great Stuff!
Date published: 2015-01-20
Rated 4 out of 5 by from pretty solid for smoke detectors They are a little difficult to understand in the beginning but they work ok just need to get them all online within 2 minutes so I had 8 and it was a little difficult at first but it's easy to reset them to start over, they are totally worth while when you think of the peace of mind should one go off hypothetically they all go off, here's to hoping I never have to find out if they work or not since there is no indicator that it is linked with any of the others. But also it is super loud so if you did not set it up right and they are not all connected it will wake you regardless
Date published: 2015-09-10
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