Whelen Engineering Company, Inc.
Beta™ Siren Series

Beta Sirens meet budget sensitive demands for low-cost, 200 watt siren warning performance, public address, radio repeat capability, and hands-free operation. Extremely versatile, Beta Sirens allow easy set-up and configuration to meet local requirements without special ordering. (Not for Motorcycle Use)

  • Hands-Free operation
  • 16 Siren tones available
    • Includes Wail, Yelp, Piercer™, High-Low, B-Wail, B-Yelp, B-Hi/Low and Air Horn tones
  • Conveniently accessible dip switches on remote amplifier allows instant configuration of eight modes of operation, including Title 13 mode
  • Public Address and Radio Repeat modes are standard
  • PA over-ride in all functions
  • 200 watt output
  • Power to drive two 100 watt speakers
  • Easy to install. Pre-wired with quick disconnect plugs for easy service and fast replacement

BETA112R:

  • BETA112R remote amplifier works with the BETA1 and BETA2 Control Heads (sold separately),customer supplied switches, or slide switch control systems

BETA1 & BETA2 Control Heads:

  • BETA1 control head is pre-drilled for under dash mounting and includes noise canceling microphone
  • BETA2 control head may be used for surface and recessed mounting applications. For flush installation, a mounting bracket with integral flange is optional
  • Moisture resistant BETA2 control head is fully encapsulated, features sealed toggle and rotary switches, and includes a removable noise canceling microphone

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 BETA112R BETA1/BETA2
Input Voltage 12 or 24 VDC 12 or 24 VDC
Output Power 200 Watts 200 Watts
Input Current (Siren on) 12 VDC: 16 Amps

24 VDC: 8 amps

500 mA (max)
Input Current (off) 0mA 0mA
Standby Current 140 mA (max) 140 mA (max)
Fuse 12 VDC: 20 Amps

24 VDC: 10 amps

10 amps
Fuse Mounting Inline connector Inline connector
Output Short Protection Fuse
Horn/Ring Control 12 VDC or ground
Weight 2.4 lbs. (1.1 kg) 1.0 lbs. (.45 kg)
Certifications Class A requirements Class A Requirements
Warranty Two year warranty Two year warranty