First Alert SA521CN-3ST Alarm Smoke Hrdwrd Ac/Dc Wrlss


First Alert SA521CN-3ST Alarm Smoke Hrdwrd Ac/Dc Wrlss
List Price: $63.39  

Our Price: $56.59

You Save: $6.80 (11%)

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Product Description

Smoke alarms battery powered photoelectric"onelink" ac/dc Easily expand an existing interconnected 120-volt AC system by replacing one alarm in the series with this alarm. Add additional battery-operated First Alert Onelink enabled alarms to expand without wires. Photoelectric smoke alarm reduces nuisance alarms. Alarm and low battery silence feature.

Key Features

  • 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
  • Eco friendly, completely recyclable as an electronic device
  • EZ access battery door, no need to remove alarm from ceiling to change battery
  • Mute button, mutes unnecessary alarms immediately. also tests alarm function with same button
  • Optional theft prevention lock, when activated, batteries and or alarm cannot be removed without proper tool
  • Photoelectric smoke sensing, optimal protection from smoldering fires. plus, reduces false alarms like those caused by cooking fires and shower steam
  • 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

See similar products in our Fire & Smoke Alarms & Accessories department.

Product Information

Shipping: This item is available for shipping to the US (Territories and APO/FPO) and Canada.

Additional Information

SKU JAJA-2380
UPC-A 029054002440
Manufacturer Part Number SA521CN-3ST
Shipping Weight 1.36 pounds

Technical Details

Product Type Smoke Alarms

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