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Document History

  1. ULC 531


    Standard for Smoke Alarms (CAN/ULC S531:2019)

    • Most Recent
  2. ULC 531


    Standard for Smoke Alarms (CAN/ULC S531-14)

    • Historical Version
  3. CAN/ULC S531-02-AMD1


    Standard for Smoke Alarms, Includes Amendment 1 (Feb 2011)

    • Historical Version
  4. ULC 531

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    Standard for Smoke Alarms

    • Historical Version