System Sensor speakers transmit the clear, intelligible messages necessary to meet code, save lives, and protect property. Indoor, outdoor, wall, and ceiling speakers provide a plug-in design that speeds installation and virtually eliminates costly ground faults. 12- and 24-volt options and the option of plain (non-printed) housings make a single device easily adaptable to a wide range of applications, which simplifies inventory, specification, and installation. Model numbers with a “K” suffix are outdoor-rated, NEMA 4X rated, and listed to UL 1480.

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