Wolo 420 User Manual

THE COMMISIONER

TM

200 WATT ELECTRONIC SIREN

& PA SYSTEM Model 4200

Your purchase of a Wolo electronic siren, THE COMMISIONER, is the perfect choice for reliable service. THE
COMMISIONER is manufactured with the finest materials and each siren is tested to meet our high standards,
ensuring a perfect working siren controller. Wolo’s quality workmanship and components are your assurance that
this product will provide years of dependable service. If you need help with installation or in using your new Wolo
siren, our technicians are available to answer your questions, Monday thru Friday, from 9 AM to 4 PM EST at 1-888­550-4676.

Before installation of the siren is attempted, it is important to read these instructions completely. The lives of people
are dependent on the proper installation of this product. The person installing this siren must have advanced
knowledge of the proper method for installation of emergency warning equipment, connecting and securing wires to
a vehicle’s electrical system and knowledge of the vehicle's electrical system. Again, read this manual completely
and note any messages marked “IMPORTANT” or “WARNING’’. A safe installation will prevent serious injury or
damage to the vehicle.

Sound Hazard

IMPORTANT: This siren, like all effective sirens, produce a powerful audible sound that could cause permanent

hearing loss. Note: Hearing loss can occur from short exposure to very loud sounds and or long exposure to
moderate loud sounds. To protect your hearing and the hearing of others in or close proximity to the emergency
vehicle using this siren, always use proper ear protection. Refer to federal, state, local municipality regulations and
OSHA Standard 1910.95 for guidelines of “Permissible Noise Exposure’’

INSTALLATION RECOMMENDATIONS

• For maximum sound be sure that the speaker connected to THE COMMISIONER siren controller is not less then
200 watts. Recommended Wolo speakers is: Model 4004, or two 100-watt speakers Model 4002 or 4003.

• The speaker or speakers should be mounted facing forward on the vehicle. To obtain maximum sound output,
make sure that the speakers are unobstructed. The siren’s sou

nd can be severely reduced if objects are in front or

blocking the speaker.

• IMPORTANT: Installation of siren controller and wire routing must be out of the deployment path of vehicles air
bags.

• The siren controller must be installed in a location that will ensure safe operation of the controls and microphone.

• The siren’s controller must be mounted in a location that will provide good ventilation. Never install siren controller
close to a vehicle’s heater duct.

• Before drilling any surface for mounting of the siren controller or for routing wires, carefully inspect the desired
location to ensure that there are no components, wires and or any other vehicle parts that could be damaged by
drilling.

•  Before connecting the siren controller to the vehicle, carefully review the vehicle’s shop or build manual to ensure

the connection point will not affect the circuit or the vehicle’s operation.

• Speaker impedance: 6 to 8 ohms (not included).

IMPORTANT: Failure to follow all safety precautions and installation procedures outlined in these instructions could
result in property damage to the vehicle, serious injury or death to the driver or others.

MOUNTING SIREN CONTROLLER Fig. 1

1. IMPORTA N T: Do n ot c o n nect the siren

controller’s wires to any vehicle power point until
mounting of the controller is completed.

2. WARNING: If the vehicle is equipped with air

bags, the installer MUST consult the vehicle’s
shop or buil d manu a l to en s ur e tha t sire n
controller and it’s wires will not affect deployment
of air bags. This siren must be installed only in a
locat i on rec o m mended by the ve hicle
manufacturer. If necessary consult manufacturer
for their recommendation.

2. Failure to adhere to this warning could result in

damag e t o t h e air bag an d or re duce th e
effectiveness of the air bag, which could result in
bodily injury, or death to the driver, passengers
and others.

3. The swing bracket included has been designed to

mount to the siren controller either from the top
for hanging under dash or bottom for top surface
mounting.

CAUTION

NOTE: Use
the short
screw on
each side
of the case.

To the
microphone.

Mounting
bracket.

White
plastic
washer
between the
bracket and
the case on
each side.

Bracket can be
placed on either the top

or the bottom side of the case.
Use any of the three mounting holes.

• Before drilling any surface for mounting the siren
controller or for routing wires carefully inspect the
desired location to ensure that there are no components, wires and or any other vehicle parts that could be
damaged by drilling.

• The siren controller must be mounted in a location that will provide good ventilation. Never install siren controller
close to a vehicle’s heater duct.

4. Using the swing-mounting bracket as a template, mark the location of mounting holes to be drilled, (2 holes in

each slot of the mounting bracket).

5. Drill holes on the marked locations using a 15/64” drill bit.

6. Secure the swing-mounting bracket to the desired location using the hardware provided, (5.95 mm x 20-screws,

flat-washers, lock-washers and nuts).

7. The siren controller is secured to the mounting bracket using the hardware provided, (5.95 mm x 10-screws, lock-

washer and plastic washer). Tilt and position the siren controller so that it is easily reachable by user. Tighten the
two screws that secure the siren controller to the swing bracket.