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First Alert SA521CN-3ST Hardwired Onelink Wireless Smoke Alarm, 120 VAC, Photoelectric, 85 dB

SKU: 587906

Save 2% · Retail: $60.19

In Stock and Ready to Ship

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Texas Warehouse
Available to Ship in 3-5 days
$58.81/ea 8
Order From Manufacturer
Available to Ship in 3-4 weeks

About the First Alert SA521CN-3ST

First Alert SA521CN-3ST Hardwired Onelink Wireless Smoke Alarm, 120 VAC, Photoelectric, 85 dB

Product Details

Mpn # SA521CN-3ST
Shipping Dimensions 8.8" x 7.1" x 10.5"
Weight 0.80 lbs.
Shipping Dimensional Weight 3.67 lbs.

Product Features

  • Type: Hardwired, Onelink, Wireless
  • Voltage Rating: 120 VAC
  • Battery Size: (2) AA
  • Sensor Type: Photoelectric
  • Sound Level: 85 dB
  • Includes: Mute Button, Test/Silence Button
  • Standards: UL 217, FCC Compliant
  • Wireless interconnectivity, wirelessly connect up to 18 one link alarms in your home and when one sounds, they all sound for increased whole home protection
  • 120 VAC hardwired, easily replace one existing hardwired alarm with one link SA521 and then add one link 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 outage
  • 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


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