TB0349A
Page 9 of 12
09/22/05
YELP
STBY
WAIL
ON
OFF
RAD
MAN/PHSR HORN
VOLUME
RAD PA
OPERATION
Sound
Hazard
- Sound level from siren speaker (>120dBA @ 10 feet) may cause hearing damage.
Do not operate siren without adequate hearing protection for you and anyone in immediate vicinity.
(Ref. OSHA 1910.95 for occupational noise exposure guidelines)
SIREN CONTROLS
Two 3-position rocker switches control the primary operating modes of siren.
These modes are as follows:
On:
Applies power to the siren system for operation independent of
light control system. It also turns on backlighting for night use.
The switch should be turned off when vehicle is not being used to
conserve battery power.
Off:
Turns off power to the siren section.
Radio:
This mode reproduces, or repeats, the output of a radio. The radio must be connected and RADIO
VOLUME on the face adjusted. No siren tones or PA operation are available in this position.
Wail:
The siren produces a normal rise-fall tone pattern. This mode may be used on highways or areas with
constant traffic flow.
Yelp:
The siren produces a moderate warble tone. This mode may be used in lightly congested areas.
Standby:
A silent mode that allows Manual, Horn and Public Address operation.
Manual /
Phaser:
With the mode switch in the Standby position this push-button switch
provides Manual siren tone control, rising when pressed and falling when
released. When the mode switch is in the Yelp or Wail positions, the
push-button provides Phaser tone. This tone is a very fast warble tone
used at intersections or in highly congested areas. Pressing the button
once changes to the Phaser tone and pressing again changes the tone
back to Yelp or Wail. Optional operation includes replacement of the
Phaser tone with Two-Tone or disabling the Phaser tone entirely
Horn:
This push-button switch provides a simulated air-horn tone while pressed. This can be used to
supplement the normal vehicle horn and is useful at intersections or in low noise areas. This tone will
override all other siren tones.
PA:
Pressing the microphone button in any mode except Radio changes the unit to PA (Public Address). The
siren mode resumes when the button is released. Adjust the PA Volume and hold the microphone close
to your lips for proper operation.
Volume Controls
Volume controls are provided for radio repeat function volume and public address volume.
These should be set when the vehicle is parked. Set the RAD volume with the selector switch
in the Radio position and the radio volume set to desired level. Set the PA volume to the
maximum level with no feedback (squeal).
