Operating instructions
SC-411RD-10  Installation and Operating Instructions  Page 3 of 12 
CP5094C  7/30/12 
GENERAL DESCRIPTION 
The SC-411RD Remote  Light Control/Siren is a premium unit designed  for dual  100W  speaker use.  The  pri-
mary  operating  modes  are  Radio,  Cycler,  Standby,  Yelp, Wail,  and  Phaser.    A  Noise  Canceling  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 inputs are 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 is on the front panel while Radio volume control is on the amplifier. 
The front panel is backlit with LED's for night visibility, dimmable with a front panel switch and/or connection to 
dash  lights.    The  siren  circuits  utilize  short  circuit,  high  voltage,  and  reverse  polarity  protection  for  maximum 
service life. An indicator light on face is provided for siren output diagnostics. 
The SC-411RD also provides a 4-position lever switch with LED indicators for primary lighting system control of 
up to 50  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 10 amps per switch.  Each out-
put is 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 unintentionally. A video camera trigger output 
is activated with the lever switch or programmed auxiliary switches.  Two switches are dedicated to arrow stick 
control (left, right, center) with function indication and specific control outputs. 
All optional settings are programmed from the remote head face.  These settings are synchronized between the 
head and  amplifier using  our QuickClone™ duplication technology, a quick-copy feature for simple  transfer  of 
option setting among multiple heads and amplifiers for efficient fleet installations. 
SPECIFICATIONS 
Siren Section 
Input Voltage  10 - 16 VDC (negative ground) 
Input Current  16 AMPS (@14 VDC - dual 100W speakers) 
Standby Current  Less than 300 ma 
Audio Frequency  200Hz - 10 kHz + 3db 
Audio Distortion  Less than 7% (@1 kHz - dual 100W speakers) 
Audio Output  80 watts (@14 VDC - dual 100W speakers) 
Audio Input  400 ohms + 10% 
Output Power  210 WATTS RMS MAX. (15 VDC - dual 100W speakers) 
Siren Frequency  700Hz - 1500Hz (Two-Tone and Horn = 435 & 585Hz) 
Tones / 
Cycle Rates 
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. 
Momentary push-button Dimming switch. 
Enable input (positive) to turn on unit. 
Auxiliary siren input programmable for positive or negative operation. 
Auxiliary light control input programmable for positive or negative operation. 
Cutout input programmable for positive or negative latching operation. 
Face-programmable option settings. 
Connections (Rem. 12-Term Blk)  (2) Neg, (3) Spkr, (2) Radio, Power, Siren Ctrl, Light Ctrl, Cutout, Backlit (#28-#12 AWG) 
Light Control Section  
Controls  4-position lever switch with position 3 siren activation and LED indicators 
8 - on/off lighted push-button switches with replaceable legends 
Current (Lever Switch)  20 AMPS per circuit, 50 AMPS total 
Current (Aux. Sw.)  10 AMPS per switch, 30 AMPS total 
Connections 
(Removable 3-Term Block) 
(Removable 10-Term Block) 
Power Input - (2) screw terminal inputs (#22 to #6 AWG) 50A max each, external fuse reqd. 
Lever Switch - (3) outputs (#22 to #10 AWG), 20A max each 
Aux. Switches - (6) outputs (#22 to #12 AWG), 10A max each 
Left, right & center arrow stick control outputs (#22 to #12 AWG), 0.2A max each 
Video control output (#22 to #12 AWG), 0.2A max 
General 
Size  Control Head: 6-1/8" X 2-5/8" X 1-1/4"    Amplifier: 8-3/4" X 8-1/4" X 2-1/8" 
Shipping Weight  6 LBS. 
  Horn  Wail  Yelp  Phaser  Two-Tone 
 109 CPS  13 CPM  190 CPM  15 CPS  60 CPM 
Head/Amplifier Interconnect  CAT 5e cable 25ft (supplied) 
Control Head Mounting  Flush, surface or bracket mount (supplied) 










