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title: Surge Protective Devices
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### SPDs at monitored facilities shall provide Form C dry contacts to signal protection status to a remote panel or building management system.
−### The Contractor shall coordinate monitoring contact wiring and points with [[sync/building-automation]].
+### The Contractor shall coordinate monitoring contact wiring and points with [[sync/building-automation-system]].
### A failed SPD that is not monitored or visibly inspected leaves equipment unprotected until the next manual check; remote contacts and alarms surface the failure so the device is replaced promptly. {note}
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## Stocking spare modules allows a depleted SPD to be restored to service quickly after a major surge event, rather than waiting on procurement while equipment is unprotected. {note}