Pathfinder PF400Q — Available with the trademark Q-Tone

Familiar Sound, Trusted Performance for Fire & EMS

Lead the Way with the Iconic Sound of Authority

The PF400 delivers 400W of powerful, clear multi-tone audio for first responders in high-stress situations. PF400Q models feature the classic Q-Siren® tone, blending tradition with modern control. Unified light and siren control helps crews stay focused and operate efficiently.

Q-Siren Tone Contact me

A Federal Signal Pathfinder PF400Q siren and control system with a handheld microphone, control panel, and main unit on a red background.

Engineered for Fire & EMS—Built to Perform When It Matters Most

The PF400Q features customizable buttons with multiple functions and over 100 labeled options for easy setup. Its dimmable backlit buttons enhance night safety, and expandable modules support NFPA-compliant lighting and siren control.

We Answered The Call

Fully Equipped Lights & Siren Controller for Ultimate Response Efficiency

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400 Watt programmable light and siren

400-Watt programmable siren/light controller with remote-mount amplifier

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Integrated Quad Tone

Quad tone simulates the sound of a multi-vehicle emergency response

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(4) 100-Watt independent audio channels

Four 100-watt channels deliver customizable high or low frequency sounds

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Multi-tone library + voice

Standard voice messages available in English, Spanish, and French Canadian to broadcast alerts.

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Scene control, simplified

Convergence Network Configuration Software allows for easy customization siren and light controls

Fleet consistency

With FS Vehicle Integration/On-board Diagnostics Integration (OBDII), warning lights can be ready at a moment’s notice

Clearing the Path

Rumbler® and Multi-Tone Capability for Maximum Response Where It’s Needed Most

A fire truck with flashing lights follows behind a red car on a city street, with buildings on both sides.

Rumbler

Rumbler low frequencies deliver up to 10 dB more sound pressure inside civilian vehicles near your emergency vehicle — getting attention and clearing traffic more effectively than a standard siren tone.

Multitone

Provides a 50% increase in audible warning distance vs. a single-speaker/single-tone system. Multi-tone creates the perception of a multi-vehicle, emergency response ideal for highway patrol.

A car pulls over to the side of the road as a fire truck with flashing lights approaches in the opposing lane. A second fire truck follows behind, partially visible.

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Simplify NFPA 1901 Compliance with Smart Configuration

Stay compliant and response-ready—our NFPA Configurator makes it easy to design lighting and siren layouts to NFPA 1901 standards and quickly program your PF400Q with confidence.

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Model Comparison — PF400Q Series for Fire Apparatus

Model	Controller Style	Fire/EMS Application
PF400Q	Remote, surface-mount	Rotary knob + 4 push-buttons; integrated Q-Siren tone for fire engine installs.
PF400QH	Handheld mic	14 programmable push-buttons; ideal for compact ambulance siren control.
PF400QR	Remote, surface-mount	Rotary knob + slide switch; popular in fire truck consoles.
PF400QAMP	Amplifier only	400 W amp with Q-Siren tone; pair with preferred controller for custom fire rigs.
PF400QS17B	Kit configuration	PF400Q with harness/bracket bundle; simplifies fire apparatus upfits.
PF400QFM	Factory-mounted	Variant for OEM fire truck installations (consult sales).
Also available: non-Q versions (PF400R, PF400H, PF400S17B) for departments not requiring Q-Siren.

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