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Whelen Hands Free Full Function 100/200 Watt Siren



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The Whelen Hands Free Full Function 100/200 Watt Siren (295SLSA1) siren offers a large, unique and distinctive collection of features designed to allow the user to customize the operation of this siren to suit their individual wants or needs. This is a compact, self-contained unit that is backward compatible to, and replaces the 295HFSA1/295HFSM1 with a slightly shallower in design for under dash/console mounting. The "Hands Free" feature lets you keep both hands on the wheel, both eyes on the road and access three siren tones and On/Off. The Scan-Lock Tone Programming feature lets you choose from 17 siren tones to preset during siren installation via a momentary switch located on the back of the unit secures siren tones for agency standardization. Now you can access siren tones using the Scan-Lock feature or check on/off status of your siren via an icon on your video system. The 295SLS Series sirens are full function plus radio repeat and public address.


  • Selectable 100 or 200 watt output.
  • Power to drive two, 100-Watt speakers.
  • Hands-free operation lets you keep both hands on the wheel.
  • 17 user selectable Scan-Lock siren tones to choose from at time of installation.
  • Customize the placement of each siren tone on the rotary knob.
  • Simulated mechanical siren tones.
  • Harmonically-rich, composite Air Horn tones.
  • Meets Class A Sound Requirements
  • Title 13-compliant profiles
  • "Siren in use" icon driver.
  • Siren Interruption Control.
  • Radio Repeat.
  • Faceplate volume control knob.
  • Two manual functions allow for additional siren tone choices.
  • PTT (push to talk) switch on microphone overrides all siren functions.
  • Combination On/Off and horn ring transfer switch.
  • Hard-wired unidirectional microphone.
  • Adjustable preset radio repeat volume.
  • Input polarity protection.
  • Non-destructive output short circuit protection.
  • High and Low Voltage Shutdown.
  • External spade-type fuse.
  • Bi-polarity horn/ring control activation.
  • "Aux Enable" activates siren tones via input (slide switch, power controls or relay-to-ground connection).
  • Quick disconnect plug for ease of service or replacement.
  • SI TEST, fully diagnostic silent test of amplifier and speaker(s).
  • Adjustable intensity backlighting in soft LED non-glare green.
  • Adjustable bail bracket allows the mounting of the siren in a variety of positions.
  • Complements all Whelen's under dash products.

Technical Information

  • Input Voltage: 12 VDC ±20%
  • Input Current: 16 AMPS (TYP.)
  • Dimensions: 2-1/2" (63mm) H x 6" (152mm) W x 7" (178mm) D.
  • Weight: 3 lbs. 12 oz. (1.7kg)

Below are samples of the siren tones provided by Whelen. 





Yelp 249

Mechanical Tone

Pulsed Airhorn

Whelen Five Year Warranty on Amplifier

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