SC-409-10 Installation and Operating Instructions Page 3 of 16
CP4958A 11/10/05
GENERAL DESCRIPTION
The SC-409 Light Control/Siren is a premium unit designed for single or dual 100W speaker use.
The primary operating modes are Radio, Cycler, Standby, Yelp, Wail, and Phaser. A Noise Can-
celing PA Override and push-button Horn Override are available in all modes except Radio. A
push-button is provided for toggling between Wail, Yelp, and Phaser tones, and Manual siren
control in silent modes. The Phaser tone can be optionally replaced by Two-Tone or disabled
entirely. Auxiliary input is provided for connection to horn ring circuit or switch. A latching siren
cutout input is provided for connection to a door switch, etc. to stop siren tones when exiting the
vehicle. PA volume control on the front panel while Radio volume control is on rear panel. The
front panel is backlit with LED's for night visibility. The siren circuits utilize short circuit, high volt-
age, and reverse polarity protection systems for maximum service life. Output indicator light on
face for siren output diagnostics.
The SC-409 also provides a 4-position lever switch with LED indicators for primary lighting system
control of up to 60 amps total and automatic siren tone in last position. Six programmable lighted
push-button switches with replaceable legends provide auxiliary lighting or other device control up
to 20 amps per switch. Each output fused and monitored with visual and audible indicators for
diagnostics. An alert periodically sounds (may be disabled) when outputs are on to help prevent
leaving lights on unintentially. A video camera trigger output is activated with the lever switch or
programmed auxiliary switches.
SPECIFICATIONS
Siren Section
Input Voltage 9 - 16 VDC (negative ground)
Input Current 8 AMPS (@14 VDC - single 100W speaker)
16 AMPS (@14 VDC - dual 100W speakers)
Standby Current Less than 300 ma
Audio Frequency 200Hz - 10 kHz + 3db
Audio Distortion Less than 3% (@1 kHz - single 100W speaker)
Audio Output 40 watts (@14 VDC - single 100W speaker)
Audio Input 400 ohms + 10%
Output Power 105 WATTS RMS MAX. (15 VDC - single 100W speaker)
180 WATTS RMS MAX. (15 VDC - dual 100W speakers)
Siren Frequency 700Hz - 1500Hz (Two-Tone and Horn = 435 & 585Hz)
Tones / Cycle Rates Horn Wail Yelp Phaser Two-Tone
Cycle Rates 109 CPS 13 CPM 190 CPM 15 CPS 60 CPM
High Voltage
Protection
16 - 18 VDC will cause siren output to cease, resume at normal voltage
Short Circuit Current 50 AMPS (supply circuit must be capable of supplying this)
Operating Temp. -15° F to +140°F
Controls 6-position rotary mode switch (Radio, Cycler, Standby, Yelp, Wail, and Phaser).
Momentary push-button Horn switch.
Momentary push-button Manual/Tone toggle switch.
Enable input (positive) to turn on unit.
Auxiliary input programmable for positive or negative operation.
Cutout input programmable for positive or negative latching cutout operation.
Internal DIP switch option selectors.
Connections
(Removable 12-Term
Block)
(2) Positive, (2) Negative, (2) Speaker, (2) Radio, Enable, Auxiliary, Cutout
Also location for Video output associated with light controls.
Light Control Section
Controls 4-position lever switch with position 3 siren activation and LED indicators
6 - on/off lighted push-button switches with replaceable legends
Current (Lever Switch) 20 AMPS per circuit, 60 AMPS total
Current (Aux. Sw.) 20 AMPS per switch, 80 AMPS total
Connections Lever Switch - (1) #10 AWG input (up to #6 AWG), (3) screw terminal outputs
Aux. Switches - (1) #10 AWG input (up to #6 AWG), (6) screw terminal outputs
General
Size 6-1/8" Wide, 8" Deep, 2-3/4" High
Weight 6 LBS.
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