Whelen Howler Low-Frequency Siren Set with Amplifier


Sale price$599.99


The Whelen Howler Siren enhances warning signals in high-risk areas like intersections by emitting deep, penetrating tones that alert drivers and pedestrians to an approaching vehicle. It is an additional feature, not a replacement for the primary siren, providing an eight-second burst of low-frequency sound useful in heavy traffic or noisy environments. The system includes an amplifier and two speakers, compatible with any 100/200 watt siren amplifier to sync with the primary siren tones. It offers eight-tone durations from 7.5 to 60 seconds and allows frequency selection via Scan-Lock buttons. Two external cancel controls are provided for 12-volt or ground deactivation. Certain vehicles may need single or dual speakers, and the system supports 12 or 24 VDC power sources.


  • Add-on to any 100/200-watt siren amplifier
  • Uses low-frequency tones to synchronize with the vehicle’s primary siren tones
  • Works with any sweeping, Hi/Low, or electronic mechanical tones generated by the primary siren
  • Scan-Lock™ allows for easy set-up of tone duration and frequency style
  • Uses the primary siren speaker output wires and divides the frequency into one of three frequency bands via Scan-Lock™ buttons
  • Selections are ¼ tone, ½ tone, or a composite of both
  • Includes two external cancel controls: choose from 12-volt or ground deactivation

Tech Specs:

  • Input: 16 amps 
  • Tone Durations: 8 durations, 7.5-60 seconds
  • Item Weight: 16.27 pounds
  • Package Dimensions: ‎22 x 11.5 x 10.1 inches
  • Voltage: ‎24 Volts


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