First Alert Wireless Interconnect Hardwired Smoke Alarm

Build a Safety network of Interconnected Alarms in Your Home Without the Cost and Hassle of Wiring
  • Wireless integration with other alarms in your home
  • Photoelectric smoke sensing alarm with mute button
  • Eco-friendly
  • Easy access battery door
  • Optional theft-prevention lock to protect alarms
  • Loud 85db alarm



List Price: $75.99

Your Savings: $19.23

  • Details
  • Specs
  • Reviews
  • Manuals
  • What's Included
  • The First Alert Onelink Integrated Wireless Smoke Alarm links the alarms throughout your home. This 120VAC hardwired wireless detector with battery backup integrates single alarms into a system. Expand protection by replacing one existing hardwired alarm with Onelink and linking to existing hardwired and battery operated alarms. By adding Onelink battery powered alarms elsewhere, when one alarm sounds, all alarms will be notified. Easily link alarms with the press of a button. Photoelectric smoke sensor reduces nuisance alarms. Easy access battery drawer: no need to remove an alarm from the ceiling to change battery. Includes 10-year limited warranty. Meets UL standards.

    Works with the Insteon Smoke Bridge
    The First Alert ONELINK Smoke detectors can be linked to the Insteon Smoke Bridge to create email and text message alerts in case of smoke, fire or carbon monoxide using an Insteon Hub or other central controller. It can also be linked to lights or other Insteon devices manually or via software to turn lights on instantly in the event of an alert to make the escape faster, easier and safer.

  • General
    Manufacturer First Alert
    Manufacturer Product No. SA520
    UPC 029054018960
    Sensor Photoelectric
    Warranty Claim 10-Year Limite
    Color White
    Battery backup AA
    Product Dimensions (L x W x H): 8.3 (inches) x 7.18 (inches) x 10.0 (inches)
  • 5 Reviews

    Beware! These "wireless" SD need to be Hard-wired! Review by Ray
    Beware! These "wireless" SD need to be Hard-wired!

    This is a hard-wired "wireless" smoke detector. I bought this from a link from the Insteon smoke bridge. These need to hard wired to 120VAC. The wireless part is that if you have more than 1 they communicate with each other. If running wire to it is an expensive option (was for me and I had to send them back), there is a battery powered version (more expensive - of course.) FIRST ALERT SCO501CN-3ST ONELINK CARBON MONOXIDE AND SMOKE DETECTOR WITH VOICE.

    Posted on 2/22/2017

    Review of 79861 Review by JOHN
    Review of 79861

    I replace two old hard-wired detectors and have been pleased with how these work with the ISY.

    Posted on 4/12/2014

    Review of 79861 Review by JOHN
    Review of 79861

    Easy install. Works well. The two detectors communicate with each other and with the ISY.

    Posted on 4/12/2014

    Review of 79861 Review by JASON
    Review of 79861

    Love it! SUPER EASY to set up and install. Linked to smoke bridge right away. Great product!

    Posted on 5/30/2013

    Review of 79861 Review by KEVIN
    Review of 79861

    WOW, along with the Insteon smoke link bridge I can now monitor my home away from home for smoke, too cool. It also linked with my older smoke detectors (hardwired) though out the house.

    Posted on 3/13/2013

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    • Wireless Smoke Alarm
    • 2AA Batteries

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