Filter
Top Products
Page 8 of 12 SC-550-10 28 Volt Installation and Operating Instructions
05/07/05 CP4945A
OPERATION
GENERAL
This unit is designed for easy operation under the stress associated with high-speed pursuit.
Most functions are accessible with one simple motion without repetitive activation of switches or
automatic timed switching that can interfere with desired operation.
SIREN CONTROLS
The combined power switch and volume control give power to the
hand control and adjust the PA volume. Power is turned OFF by
rotating the control counterclockwise until it “clicks”. Power is turned
ON and increased PA volume by rotating clockwise. The power
switch should be turned off when vehicle is not being used to con-
serve battery power.
The Rotary Function Switch selects various siren operating modes.
These modes are as follows:
PHaSeR: The siren produces a very fast warble tone. This mode
may be used at intersections or in highly congested ar-
eas. Horn and PA override available in this mode.
YELP: The siren produces a moderate warble tone. This mode
may be used in lightly congested areas. Horn and PA
override available in this mode.
WAIL: The siren produces a normal rise-fall tone pattern. This mode may be used on high-
ways or areas with constant traffic flow. Yelp and PA override available in this mode.
MANual: The siren rise-fall tone is controlled manually with the Siren button. PA override avail-
able in this mode.
HORN: Also considered a standby mode. Horn and PA override available in this mode.
RADio: This mode reproduces, or repeats, the output of a radio. The radio must be connected
and the RADIO VOLUME adjusted. PA override available in this mode.
The following OVERRIDE FUNCTIONS are for certain modes.
PA: By pressing the microphone PTT (Push to Talk) switch
on the side of the hand control, the siren will change to a
PA (Public Address) amplifier. The siren mode resumes
when the PTT is released. Adjust the PA Volume and
hold the MIC close to your lips for proper operation. PA
override is available in all modes.
HORN: By momentarily pressing the Siren button or activating the auxiliary siren input, the
HORN tone is produced. The siren mode resumes when released. Horn override is
available in all modes except Radio and Wail.
YELP: Only available in Wail mode. By momentarily pressing the Siren button or activating
the auxiliary siren input, the siren output is toggled between Wail and Yelp tone.
HRC2: Horn Ring Cycler 2 is only available in Horn (Standby) mode and must be enabled
with the option switches. Tap the horn ring to bring the unit out of standby into Wail
tone. Repeatedly tapping the horn ring will cycle through Wail, Yelp, and Phaser
tones. Tapping the horn ring twice quickly will stop the siren tones and return the unit
to standby. Pressing and holding the horn ring will produce Horn tone until released.
Then the siren returns to its previous siren tone or standby.. If automatic siren is ac-
tive, then tones are not stopped. See OPTION SWITCHES section for further details.
CUTOUT: The cutout input turns off any siren tone when activated, and remains off until a siren
control is changed.
PA and Siren Button
PTT
Power Switch/PA Volume
Function Switch
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)