TB0328B
Page 5 of 7
10/18/03
RADIO VOLUME ADJUST
(PA VOLUME ADJUST OTHER SIDE)
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)
RADIO
RADIO
HORN
HORN
MAN
MAN
WAIL
WAIL
YELP
YELP
PHASER
PHASER
SIREN
SIREN
SA450
SA450
ON
ON
OFF
OFF
POWER
POWER
The
OFF/ON
Toggle Power Switch controls the siren power. The siren may be left on any time the vehicle is in
operation. The power should be turned off when vehicle is not being used to conserve battery power.
The Rotary Function Switch selects various operating modes. These modes are as follows:
RADIO -
This mode reproduces, or repeats, the output of a radio. The radio must be connected and
RADIO VOLUME ADJUSTed for this mode to function. No overrides available in this mode.
HORN -
Also considered a standby mode. Horn and PA Override available in this mode.
MAN -
The siren tone is controlled Manually with SIREN button. PA Override available in this mode.
WAIL -
The siren produces a normal rise-fall tone pattern. This mode should be used on highways or
areas with constant traffic flow. Yelp and PA Override available in this mode.
YELP -
The siren produces a moderate warble tone. This mode should be used in lightly congested
areas. Horn and PA Override available in this mode.
PHASER -
The siren produces a very fast warble tone. This mode should be used at intersections or in
highly congested areas. Horn and PA Override available in this mode.
OVERRIDE FUNCTIONS
PUBLIC ADDRESS
(PA) OVERRIDE -
By pressing the microphone button any siren tone output is turned off, allowing the operator to
use the siren as a public address amplifier. The siren tone resumes when the button is
released. (Hold the microphone close to your lips for proper operation and set PA VOLUME
ADJUST)
HORN OVERRIDE
-
By pressing the SIREN button the siren tone output is replaced by the horn tone. The siren
tone resumes when the button is released. (This feature is not available in WAIL mode.)
YELP OVERRIDE -
Available only in WAIL mode. By momentarily pressing the SIREN button the tone output is
switched to the Yelp tone. Pressing the button again switches the tone output back to Wail.
PA and RADIO VOLUME ADJUST
Access the PA and RADIO VOLUME ADJUST through a hole on the side of the unit.
The PA VOLUME ADJUST is a one time setting depending on the users voice.
Switch siren to HORN mode and turn on the power. While pressing the mic button
and speaking into the mic, set the PA VOLUME ADJUST for desired level.
The RADIO VOLUME ADJUST is a one time setting which depends on the radio
connected and its normal volume. Switch siren to RADIO mode and turn on the
power. With the volume on the radio itself set to normal level, set the RADIO
VOLUME ADJUST to the desired level.
