First Alert SA521CN-3ST Hardwired OneLink Wireless Smoke Alarm

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The First Alert SA521CN-3ST Interconnected Smoke Alarm allows owners to create an interconnected fire alarm system without the cost and hassle of wiring. Use this smoke detector to replace an existing hardwired smoke alarm and then install additional First Alert Wireless alarms for an interconnected safety network. This hardwired smoke detector can connect and communicate with up to 18 compatible alarms, so when one alarm is triggered, the entire system reacts. An integrated battery backup ensures the smoke alarm continues to work even during power outages.

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Item# : SPM16116972928
Model # : WDS6629
  • Product Overview:

    • Item Weight :
      0.70 lbs (lbs.)

    • Power Source:
      Battery Powered

    • Product Type:
      Smoke alarm

    • Voice-Alert:

  • Color:

    • Color/Finish:

  • Batteries:

    • Battery Type:
      2AA batteries

    • Low Battery Indicator:

    • Number of Batteries Included:

    • Number of Batteries Required:

  • Smoke Detector:

    • Smoke Sensor Type:
      Dual sensor for flames and smoldering fires (s)

  • Carbon Monoxide Detector:

    • Digital Display:

  • SafetyFeatures:

    • Alarm Indicator Light:

  • Remote:

    • Remote Silence Alert:

  • Package Includes:

    • Package Contents:
      2AA batteries included

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WARNING : Cancer and Reproductive Harm -
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