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Reference · Testing & Inspection

Valve Supervisory (Tamper) Switch

A switch that reports a supervisory signal when a sprinkler control valve moves off the fully open position, so a closed valve is never silent.

NFPA 72: 17.16

Section numbers vary by edition — confirm in the edition your AHJ has adopted.

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Preparing for a Fire Alarm InspectionInspections validate design and installation. Thorough documentation and a self-check prevent failed inspections and costly delays.

Related terms

End-of-Line DeviceGround FaultTrouble SignalWaterflow SwitchRecord of CompletionAcceptance Test
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