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Alert System Type
Smoke / Fire / Carbon Monoxide
Sensor Type
Smoke / Heat
Audible Indicator
Battery Backup
Ease of Installation
Intermediate (Installs < 60 minutes)
First Alert
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Build a Safety network of Interconnected Alarms in Your Home Without the Cost and Hassle of Wiring
First Alert SA501CN-3ST Onelink Wireless Battery Powered Smoke Alarm
First Alert SA501CN-3ST Onelink Wireless Battery Powered Smoke Alarm
First Alert SA501CN-3ST Onelink Wireless Battery Powered Smoke Alarm
Item# 79859
Price: Normally $65.99 
Hot Deal $43.75
Free shipping on orders over $175 - See Details


  • Wireless integration gives effortless connectivity
  • Photoelectric smoke sensing with mute button
  • Eco-friendly
  • Easy access battery door
  • Optional theft-prevention lock protects the detector

Essential Info

The First Alert SA501CN-3ST Onelink Wireless Battery Powered Smoke Alarm allows wireless smoke detector integration. This battery powered wireless detector interconnects alarms with battery backup. Expand protection to include existing hardwired detectors and new wireless detectors by replacing one existing hardwired alarm with Onelink. By adding Onelink battery operated alarms elsewhere, when one alarm sounds in either series of alarms, all alarms will be notified. Easily link alarms together with the press of a button. Photoelectric smoke sensor reduces nuisance alarms from cooking smoke or shower steam. Easy access battery drawer: no need to remove alarm from ceiling to change battery. 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.


What's Included

  • Wireless Smoke Alarm
  • 2AA Batteries
  • Specifications

  • Sensor: Photoelectric
  • Warranty Claim: 10-Year Limited
  • Color: white
  • Battery backup: AA
  • Product Dimensions (L x W x H): 7.20 (inches) x 2.90 (inches) x 10.40 (inches)
  • Reviews

    1 Ratings
    5 star: 100%  (1)
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    Average Customer Rating
    (1 customer ratings)
    Share your thoughts with other customers
    RAY -- simi valley, CA   4/24/2014
    Installed without a problem. Hopefully it never has to do it's job. : )

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