Wheelock Mass Evacuation Systems
And Emergency Notifications

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Wheelock Cluster Speaker System with 2-4 STH-15SR Horns Mounted to a NEMA Type 1 Steel Enclosure

Model #STH-3R

Wheelock’s Series STH Cluster Speakers are designed for high ambient noise environments. The Cluster Speakers are available in multiple configurations. Provides high intelligibility voice reproduction and available high intensity visual alerting (STH-MSR models) for emergency alarm and protective signaling.

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