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The Federal Signal Corporation EM3 is a tone extension module designed for use in fire control and life safety signaling systems. This accessory expands the tonal signaling capability of a compatible fire control panel or notification appliance circuit, allowing installers to extend or distribute alarm tones across a protected facility. The EM3 is sold as an individual unit and is typically installed by licensed fire alarm technicians or electricians working within life safety system installations.
The EM3 tone extension module is suited for commercial and institutional fire control applications where additional notification zones or tone outputs are required. It fits into the broader category of fire control accessories and is intended for integration with compatible signaling equipment. Specific compatible panel families or models are not listed in the available product data, so consult Federal Signal Corporation documentation for verified system compatibility before ordering.
Designed as an OEM-style tone extension accessory for Federal Signal Corporation fire control and notification systems. Consult Federal Signal Corporation documentation for confirmed compatible panel and circuit applications.
Installation should be performed by a licensed fire alarm technician or qualified electrician in accordance with NFPA 72 and applicable local codes. Disconnect and lock out power to the fire control panel before handling any internal modules or wiring connections. Verify that the existing notification appliance circuit is de-energized before inserting or removing the module. Follow the manufacturer wiring diagrams and programming instructions to ensure proper tone output operation after installation.
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