The Federal Signal SelecTone EM-3 Extension Module is designed for use with SelecTone® amplified speaker systems. It provides an interface between remote control stations and amplifiers, extending the functionality and range of your audio or alarm setup.

Built for industrial and commercial environments, the EM-3 module ensures reliable operation and seamless integration with SelecTone systems, ideal for plant-wide communication, public address, and emergency alert installations.

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