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June 2021

  1. #387 – Extended Coverage Sprinkler Spacing Part 2: Obstructions

    #387 – Extended Coverage Sprinkler Spacing Part 2: Obstructions
    In part 2 of our series on fire sprinkler spacing for extended coverage sprinklers, QRFS looks at the rules for avoiding obstructions.
  2. #386 – What’s the Difference Between a Tamper Switch and a Supervisory Switch?

    #386 – What’s the Difference Between a Tamper Switch and a Supervisory Switch?
    QRFS explains the difference between tamper switches and supervisory switches, plus other types of fire sprinkler system sensors.

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