
ENGINEERING COMPANY INC.
CAUTION
Loud siren noise can cause 
hearing damage and/or loss.
Refer to OSHA Section 1910.95 prior 
to putting ANY siren into service!
Wear
Protection!
ACTIVATION OF THIS 
SIREN MAY DAMAGE 
UNPROTECTED EARS!
51 Winthrop Road 
Chester, Connecticut 06412-0684 
Phone: (860) 526-9504 
Fax: (860) 526-4078 
Internet: www.whelen.com 
Sales e-mail: autosale@whelen.com 
Canadian Sales e-mail: canadiansales@whelen.com 
Customer Service e-mail: custserv@whelen.com
DANGER! Sirens produce extremely loud emergency warning tones! Exposure to these tones without proper and adequate hearing protection,
could cause ear damage and/or hearing loss! The Occupational Safety & Health Administration (www.osha.gov) provides information necessary to 
determine safe exposure times in Occupational Noise Exposure Section 1910.95. Until you have determined the safe exposure times for your 
specific application, operators and anyone else in the immediate vicinity should be required to wear an approved hearing protection device. 
FAILURE TO FOLLOW THIS RECOMMENDATION COULD CAUSE HEARING LOSS!
Whelen’s emergency vehicle warning devices must be properly mounted and wired in order to be effective and safe. Read and follow all of Whelen’s 
written instructions when installing or using this device. Emergency vehicles are often operated under high speed stressful conditions which must be 
accounted for when installing all emergency warning devices. Controls should be placed within convenient reach of the operator so that he can operate 
the system without taking his eyes off the roadway.  Emergency warning devices can require high electrical voltages and/or currents. Properly protect and 
use caution around live electrical connections.Grounding or shorting of electrical connections can cause high current arcing, which can cause personal 
injury and/or vehicle damage, including fire. Many electronic devices used in emergency vehicles can create or be affected by electromagnetic 
interference. Therefore, after installation of any electronic device it is necessary to test all electronic equipment simultaneously to insure that they operate 
free of interference from other components within the vehicle. Never power emergency warning equipment from the same circuit or share the same 
grounding circuit with radio communication equipment. All devices should be mounted in accordance with the manufacturer’s instructions and securely 
fastened to vehicle elements of sufficient strength to withstand the forces applied to the device. Driver and/or passenger air bags (SRS) will affect the way 
equipment should be mounted. This device should be mounted by permanent installation and within the zones specified by the vehicle manufacturer, if 
any. Any device mounted in the deployment area of an air bag will damage or reduce the effectiveness of the air bag and may damage or dislodge the 
device. Installer must be sure that this device, its mounting hardware and electrical supply wiring does not interfere with the air bag or the SRS wiring or 
sensors. Mounting the unit inside the vehicle by a method other than permanent installation is not recommended as unit may become dislodged during 
swerving; sudden braking or collision. Failure to follow instructions can result in personal injury. Whelen assumes no liability for any loss resulting from the 
use of this warning device. PROPER INSTALLATION COMBINED WITH OPERATOR TRAINING IN THE PROPER USE OF EMERGENCY WARNING 
DEVICES IS ESSENTIAL TO INSURE THE SAFETY OF EMERGENCY PERSONNEL AND THE PUBLIC.
Whelen’s emergency vehicle warning devices are intended to alert other operators and pedestrians to the presence and operation of emergency vehicles 
and personnel.  However, the use of this or any other Whelen emergency warning device does not guarantee that you will have the right-of-way or that 
other drivers and pedestrians will properly heed an emergency warning signal. Never assume you have the right-of-way. It is your responsibility to proceed 
safely before entering an intersection, driving against traffic, responding at a high rate of speed, or walking on or around traffic lanes. Emergency vehicle 
warning devices should be tested on a daily basis to ensure that they operate properly. When in actual use, the operator must ensure that both visual and 
audible warnings are not blocked by vehicle components (i.e.: open trunks or compartment doors), people, vehicles, or other obstructions. It is the user’s 
responsibility to understand and obey all laws regarding emergency warning devices. The user should be familiar with all applicable laws and regulations 
prior to the use of any emergency vehicle warning device. Whelen’s audible warning devices are designed to project sound in a forward direction away 
from the vehicle occupants. However, because sustained periodic exposure to loud sounds can cause hearing loss, all audible warning devices should be 
installed and operated in accordance with the standards established by the National Fire Protection Association.
Safety First
This document provides all the necessary information to allow your Whelen product to be properly and safely installed. Before beginning the installation 
and/or operation of your new product, the installation technician and operator must read this manual completely. Important information is contained herein 
that could prevent serious injury or damage.
• Proper installation of this product requires the installer to have a good understanding of automotive electronics, systems and procedures.
• Whelen Engineering requires the use of waterproof butt splices and/or connectors if that connector could be exposed to moisture.
• Failure to use specified installation parts and/or hardware will void the product warranty.
• If mounting this product requires drilling holes, the installer MUST be sure that no vehicle components or other vital parts could be damaged 
by the drilling process. Check both sides of the mounting surface before drilling begins. Also de-burr the holes and remove any metal shards 
or remnants. Install grommets into all wire passage holes.
• If this manual states that this product may be mounted with suction cups, magnets, tape or Velcro®, clean the mounting surface with a 50/50 
mix of isopropyl alcohol and water and dry thoroughly.
• Do not install this product or route any wires in the deployment area of your air bag. Equipment mounted or located in the air bag deployment 
area will damage or reduce the effectiveness of the air bag, or become a projectile that could cause serious personal injury or death. Refer to 
your vehicle owner’s manual for the air bag deployment area. The User/Installer assumes full responsibility to determine proper mounting 
location, based on providing ultimate safety to all passengers inside the vehicle.
• For this product to operate at optimum efficiency, a good electrical connection to chassis ground must be made. The recommended 
procedure requires the product ground wire to be connected directly to the NEGATIVE (-) 
battery post (this does not include products that use cigar power cords).
• If this product uses a remote device for activation or control, make sure that this device is 
located in an area that allows both the vehicle and the device to be operated safely in any 
driving condition. 
• It is recommended that these instructions be stored in a safe place and referred to when 
performing maintenance and/or reinstallation of this product.
• FAILURE TO FOLLOW THESE SAFETY PRECAUTIONS AND INSTRUCTIONS COULD RESULT IN 
Automotive: Sirens/Switches
DAMAGE TO THE PRODUCT OR VEHICLE AND/OR SERIOUS INJURY TO YOU AND YOUR 
PASSENGERS!
©2013 Whelen Engineering Company Inc. 
Form No.14702A (073014)
Installation Guide:
Broadcaster Audio Playback Module
Warnings to Installers
Warnings to Users
For warranty information regarding this product, visit www.whelen.com/warranty
Page 1
 

Installation:
RAD
MSG
PLAY
REC
LED
No Tone
YELP
Piercer
Pulsed
Airhorn
TONE
RADIO
RADIO 
POWER
MSG
SIREN
SEL
MSG
PLAY
RAD
MSG
PLAY
REC
Play or Cancel
a message
MSG PLAY
Select Pre-Tones
SIREN SEL
RADIO POWER Power Up / Power Down / Choose Radio or Message
RADIO
Adjust 2-Way
radio volume
MSG Adjust the volume of an outgoing message
MICROPHONE Record messages
LED's
MANUFACTURED IN U.S.A.
BROAD
CASTER
BROAD
CASTER
SIREN 
SELECT
SIREN
SELECT
Bail Strap
#6-32 X 1/4 
Phillips Pan Head 
Machine Screw
SW2
SW3
SW
1
SW
2
SW
3
SW
1
BAIL STRAP MOUNT
8X1/2 
Phillips Pan 
Head Sheet 
Metal Screw
BATTERY
2-WAY RADIO
FUSE @ 5 AMPS
3 
6
251
4
5 AMP
SIREN
AMPLIFIER
SIREN
AMPLIFIER
BLUE
BLUE
36
2514
RADIO
REPEAT
INPUTS
REAR VIEW
WIRING DIAGRAM
RED 
BLK
OPTIONAL
WHT/BLU 
WHT/BLU
BATTERY
2-WAY RADIO
SIREN
AMPLIFIER
Caution: Permanent mounting of this product will require 
drilling. It is absolutely necessary to make sure that no other 
vehicle components could be damaged by this process. Check 
both sides of the mounting surface before starting. If damage is 
likely, select a different mounting location.
1. Position the bail strap in the mounting location. Scribe the surface 
where the mounting holes are to be drilled.
2. Carefully drill the mounting holes in the areas scribed in step one. 
Size the drill bit for the supplied 8 X 1/2” Phillips Pan Head Sheet
Metal Screws.
3. Secure the bail strap to the mounting location using the supplied 
mounting hardware.
4. With the bail strap in place, insert the supplied #6 - 32 X 1/4 Phillips 
Pan Head Machine Screws through the holes in the side of the bail 
strap and into the holes in the control head on both sides and 
tighten the hardware securing the control head.
Wiring:
WARNING! All customer supplied wires that connect to the 
positive terminal of the battery must be sized to supply at least 
125% of the maximum operating current and FUSED 
battery to carry that load. DO NOT USE CIRCUIT BREAKERS 
WITH THIS PRODUCT!
 at the
Operation and Programming:
Powering On & Off:
1. Press and release the POWER button and the unit will power up 
in Radio Pass Mode.
2. Press and release again to toggle between Radio Pass Mode & 
Message Broadcast Mode.
3. PRESS and HOLD - (for 1 second) to power down.
To Record a Message:
1. Press the microphone button in and hold until the REC LED turns 
on, then talk into the microphone to record the message.
2. When the message is complete, release the microphone lever.
To Play a Message:
1. Press the MSG PLAY button to play the message back once, or 
press and hold the MSG PLAY button until the PLAY LED turns 
on (1 sec.) to repeat the message continuously
2. Press the MSG PLAY or POWER button to cancel the message.
To Choose a Siren Tone that will sound 
before the recorded voice message:
1. Press and release the SELECT button to 
cycle through the four LED indicators on 
the front panel. Each LED indicates either a 
tone or no tone (see chart).
2. When the LED flashes, that tone is chosen.
3. Press the button again to choose a new 
tone.
To adjust the radio volume:
1. Set the radio volume on your siren amplifier to the middle 
position.
2. Next, using a flat blade screwdriver, turn the screw in the port on 
the front of the unit labeled RADIO (clockwise to increase, 
counterclockwise to decrease).
3. If the volume is too loud or soft, adjust further using the volume 
control on the radio.
To adjust the message volume:
1. Set the radio volume on your siren amplifier to the middle 
position.
2. Next, using a flat blade screwdriver, turn the screw in the port on 
the front of the unit labeled MSG (clockwise to increase, 
counterclockwise to decrease).
Page 2