Federal Signal EM3 Tone Extension Module

Increase the effectiveness of your audible alerting with the Federal Signal EM3 Tone Extension Module — a compact control panel module that adds three-tone capability to SelecTone systems for superior security and monitoring. Designed for contractors and integrators, the EM3 installs as a surface-mount extension to Models 50GC, 300, 300GC and 302GC, letting a single speaker or amplifier produce three distinct tones for simultaneous monitoring of multiple conditions or zones. The Type 3R die-cast aluminum housing and dust/moisture seals ensure dependable indoor or outdoor performance, while the UL/cUL-listed connector board interface and no separate power requirement simplify code-compliant installations. Mount the EM3 up to 100' from the main amplifier to optimize placement in surveillance, alarm, or industrial signaling applications. Ideal for campuses, manufacturing floors, and critical infrastructure, the EM3 reduces install complexity while expanding alerting capability. Contact us to add the Federal Signal EM3 to your SelecTone installation and improve your facility’s audible security and monitoring reliability.

• Expand an existing SelecTone system to provide up to three simultaneous tones for clearer zone monitoring and faster incident response
• Durable Type 3R, dust- and moisture-resistant housing for reliable indoor/outdoor operation and long service life
• Simple integration with no separate power supply required and UL/cUL-listed connector board for code-compliant installs
• Mountable up to 100' from the main SelecTone amplifier to allow flexible placement in security and surveillance systems
• Backed by a 5-year limited warranty to reduce lifecycle risk and support long-term facility protection