Alpha™ Siren Series

The Alpha Siren Series delivers 100 or 200 watts of siren warning power, hands-free operation, multiple warning tones, and horn ring override capability. Alpha Sirens allow easy set-up and configuration to meet local requirements without special ordering.

  • Compact design is ideal for undercover and volunteer applications
  • Control siren tone through horn ring or separate switches
  • Hands-free operation
  • Harmonically rich composite Airhorn tones
  • Output open/short circuit protection
  • Easy to install
  • Pre-wired with quick disconnect plugs for easy service and fast replacement

ALPHA12S:

  • Five siren tones
  • Operates one 100 watt siren speaker
  • Dip switch access allows instant configuration of popular operating features
  • Compact design is easy to install under the dash, in a console, or in a rack

ALPHASL:

  • 18 Scan-Lock™ siren tones
  • Operates one or two 100 watt siren speakers
  • Five optional switch panels available. Will also operate from customer supplied switching controls

Alpha™ Siren Series

ALPHA12S
Self-Contained Siren, with Faceplate Switches, Selectable Four Tone Hands-Free Siren, For Single 100 Watt Speaker
ALPHASL
Remote Siren, for use with Remote Switches (Purchased Separately), Selectable Four Tone Hands-Free Siren, For One or Two 100 Watt Speakers

Alpha™ Siren Series - Accessories

ALPHA1
Single On/Off Switch for use with Hands-Free Operation
ALPHA2
Single On/Off Hands-Free Activation Plus Momentary Switch for Air Horn
ALPHA3
TONE 1/Off/TONE 2 Switch Operation Plus Momentary Switch for Air Horn
ALPHA4
Three Switch Operation, One On/Off, One TONE 1/Hands-Free/TONE 2, One Momentary Switch for Airhorn
ALPHA5
3 Position Toggle Switch, Controls 3 Siren Tones and other Warning Lights or Device Functions. Contacts Rated at 30 Amps

WARNING: These products may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit whelen.com/regulatory.

Dimensions

Specifications

Function ALPHA12S ALPHASL
Input Voltage 10-16 VDC 10-16 VDC
Polarity Negative Ground Negative Ground
Polarity Protection Diode/Fuse Diode/Fuse
Output Power 100 Watts 200 Watts
Output Load One 11 OHM speaker Two 11 OHM speakers
Input Current (siren on) 8 amps (max) 15 amps (max)
Standby Current 10 ma (max) 10 ma (max)
Fuse 10 amp auto fuse 20 amp
Fuse Mounting Spade type, in-line connector Spade type, PC board
Output Short Protection Fuse Fuse
Horn/Ring Control +12VDC or ground +12VDC or ground
Weight 2.2 lbs/1 kg 2.4 lbs/1.2 kg
Operating Temperature -30°C to +60°C -30°C to + 60°C
Operating Humidity 0-95% non-condensing 0-99% non-condensing
Connector One 6 pin amp Mate-N-Lok®, 24” wiring pigtail One 16 position input connector

Siren Tones

ALPHA12S ALPHASL
Wail Wail
Yelp Yelp
Piercer Piercer
Hi/Low Hi/Low
Airhorn Y249
B-Wail Warble
B-Yelp Whoop
B-Hi/Low Mechanical
  Pulsed Airhorn
  Airhorn Hi
  Airhorn Low
  Alternate Wail
  Alternate Yelp
  Pulsed Piercer
  Pulse Yelp/Airhorn
  B-Wail
  B-Yelp
  B-Hi/Low