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  • The sound of the Q-Siren is a registered trademark of Federal Signal Corporation
  • The distinct sound provides recognizable long-distance warning
  • Utilizes a unique clutch design that provides a longer coast down sound while reducing the amp draw
  • Beautifully streamlined and polished electro-mechanical siren produces 123 decibels at 10-feet
  • Available in traditional Chrome and Black Chrome
  • Three-year warranty

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An Iconic Fire Truck Siren
It's not a fire truck unless it's got a Q-Siren. With more than 50 years of fire service tradition and history, the Federal Signal Q-Siren® (model Q2B®) is a beautifully streamlined, chrome-plated siren designed to provide unparalleled reliability for
long-life operation. When mounted on a fire truck, the Q-Siren delivers a powerful warning sound, more than any other electromechanical siren.

The Q-Siren is available in traditional chrome and black chrome. The traditional chrome models are a compliment to the fire truck’s chrome bumper finish while the black chrome is ideal for blacked-out fire trucks.

Longer Coast-Down Sound
A heavy-duty coaster clutch is standard on Q2B models. The unique coaster clutch design enables the siren to deliver a longer coast-down sound once power is removed to reduce battery drain. The “worry-free” clutch is subject to very little wear and requires no
service attention or adjustments. Use the standard electric brake to silence the siren quickly.


Pedestal or Recessed Mounting
The Q-Siren is available in two Q2B models. The Q2B-012PSD and Q2B-P-BLK comes with a pedestal for bumper mounting and the Q2B-012NNSD and Q2B-NN-BLK are designed for recessed mounting in the bumper.

For flat and curved apparatus bumpers, a special bracket, the Q-MT, is available. This rugged, durable mount is easy to install. Constructed of tough 3/8-inch steel, the Q-MT design protects the siren from the impact of rough roads.

Hands-Free Operation
For increased convenience, the Q2B-SWKIT foot switch kit is also available. The kit comes with everything necessary to wire a foot switch to any Q2B model enabling the operator to power the siren “hands-free.”


Input Voltage 12 Vdc
Operating Current 100 A
Operating Temp. -22˚ to +149˚ F (-30˚ to +65˚ C)
Sound Output 123 dB @ 10-ft
Physical Specifications
Height 10.3 in (26.2 cm)
Width 13.6 in (34.5 cm)
Diameter 9.9 in (25.1 cm)
Ship Weight
  49.0 lb (23.0 kg)



Audible Equipment may produce LOUD sounds necessary to request the right-of-way. Audible equipment may cause hearing damage. Wear hearing protection. Refer to the Installation Manual or call 800/433-9132 for further instructions.

Important Warning for Police Boats and Fire Rescue Boats

It has come to our attention that police boat and fire rescue boat sirens and speakers may subject persons operating those craft to sound pressure levels that can cause permanent hearing loss. We recommend that speakers be located as far forward on the boat as possible, as recommended in the SAE Recommended Practice J1849 "Emergency Vehicle Sirens". However, unprotected exposures of a sufficient duration to properly located siren speakers can still create a risk of hearing loss.

It is our recommendation that your siren speakers should be relocated and persons operating these craft should wear hearing protection when using the siren system.

Failure to comply with these recommendations may result in temporary or permanent hearing loss to operators and passengers of these vehicles.

Ordering Info

Model Types
Q2B-012NNSDQ2B, mechanical siren, Chrome, recess mount
Q2B-012PSDQ2B, mechanical siren, Chrome, pedestal mount
Q2B-NN-BLKBlack Chrome, recess mount
Q2B-P-BLKBlack Chrome, pedestal mount
Q-MTKit, Q2B, bracket for recess mounting Q2B siren
Q2B-SWKITKit, Q2B, Solenoid and Foot Switch
Replacement Parts
Motor, Q2B sirenZ8280080B
Clutch assemblyZ828000641
Front grille, Q2B siren/BP200-QZ8280104B
Stator guard, Q2B sirenZ8280106A
Brake assemblyZ8280B003J-02
Mounting base, Q2B siren, polished stainless steelZ8280C077A
Rear housing, Q2B siren, polished stainless steelZH5205-03