This Pathfinder siren is in used/excellent condition! It is one of Federal Signal's newest and most highly sought after sirens with numerous capabilities and features. New MSRP is ~800-1500$; don't miss out on this deal!
 
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Description from manufacturer:
100/200 W siren and light controller with PA and noise-canceling microphone
Integrated dual-tone capability when used with (2) speakers
Integrated Rumbler® traffic clearing capability
Optional FS Vehicle Integration/On-Board Diagnostics Integration (OBDII)
Library of selectable siren tones includes SmartSiren®, Unitrol™, PA300, and Powercall siren tones  
(7) programmable inputs and (12) programmable solid-state relay outputs
Convergence Network Configuration Software allows for easy customization of siren and light controls
(2) FS Convergence Network ports