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Whelen EPSL1 Epsilon Series 100 Watt Siren
List Price $305.00
Sirennet Price:  $198.25
Brand: Whelen
Part# EPSL1

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Product Literature
Installation Sheet

The Whelen EPSL1 Epsilon Series 100 Watt Siren provides a wide range of features in a low cost siren that meets SAE Class A sound requirements and is California Title 13 compliant. Epsilon provides hands-free operation, public address, Scan-Lock multiple warning tones and real time diagnostix. The front of unit includes a PA volume control knob for the noise cancelling microphone, an On/Off switch, a manual button and a 7-position tone/radio rotary switch.


  • Full featured, self-contained electronic siren.
  • 100 watt amplifier.
  • LED Backlighting.
  • Real-time diagnostix indicator:
    • Steady light: the siren is operating correctly.
    • Single flashes: speaker is short circuited.
    • Indicator off: speaker is not at full output.
  • Nine Scan-Lock siren tones to choose from: Tone off, Wail, Yelp, Airhorn, Hi/Low, Piercer, Y249, Manual wail coast to stop and Manual wail stop.
  • Wail, Yelp, and Y249 are California Title 13 compliant tones.
  • Meets SAE Class A sound requirements when used with most 100 watt speakers.
  • Meets California Title 13 requirements.
  • Hands-free operation/override from the horn ring.
  • Scan-Lock switch is "security" located on the rear to ensure all fleet sirens are set with the same tone sequences.
  • Installation package includes all the necessary mounting hardware and input pigtail connector.
  • Rotary switch allows choice of standby for use with the manual button, manual tone 1 & 2.
  • Hands-free position allows horn ring operation of the siren and tone 1, 2 and 3 positions.
  • Each of these tone positions has an override tone when the manual button is depressed.
  • Pre-wired with quick disconnect plug for easy service and prompt replacement.


  • Input voltage: 12.8 VDC ±20%
  • Input current: 8 Amps Max.
  • Input fuse: 10 AMPS
  • Speaker impedance: 11 OHMS Min.
  • Operating temperature: -30° C. TO +60° C.
  • Storage temperature: -40° C. TO +70° C.
  • Humidity: 99% (Non Condensing)
  • Output voltage: @15 VDC @11 OHMS 34 V RMS Max.
  • Output power: @15 VDC @11 OHMS 105 Watts Max.
  • Dimensions: 5-7/8" W x 2-1/4" H x 5-3/4" D.

Whelen Twenty-four Month Warranty

Part Number(s):  EPSL1