SC-550-10 Installation and Operating Instructions Page 7 of 12
CP4818B 05/07/05
L1, L2, L3 Outputs: These outputs are controlled by the slide switch in a progressive fashion.
Outputs are fused.
S1 to S4 Outputs: These outputs are controlled individually by pushbutton switch 1 to 4.
Outputs are fused.
OUT1,2 Outputs
(Optional): Controlled by the slide switch in a non-progressive fashion.
See Slide Switch under Light Controls.
These outputs are not fused and are intended to control external relays.
When turned on the output supplies +VDC @ 500mA max.
When turned off the output is open (high impedance).
MOUNTING - Hand Control
Choose a mounting location convenient to the operator and away from any air bag deployment
areas. Consider cable routing to amplifier as well as PA use. Mount the hand control with sup-
plied Hook and Loop tape (VELCRO). If the tape method is not preferred, the hand control may
be mounted several ways including a cell phone holder. Plug cable into amplifier, no other electri-
cal connections are necessary.
MOUNTING - Amplifier
Select a location for the amplifier in an area such as the driver compartment firewall, under a seat,
etc. Mounting the amplifier in the engine compartment or in an area directly exposed to weather
is not recommended. Assure adequate ventilation to prevent overheating. Allow clearance for
wiring and radio adjustment. Inspect behind mounting area for clearance. Mark the location of
the mounting holes to be drilled.
Drill 4 holes (up to 1/4" diameter) to mount the amplifier to the vehicle. Install the removable ter-
minal block plug and make all electrical connections before final mounting (See ELECTRICAL
CONNECTIONS). The plug may be secured with the two locking screws. Then mount the ampli-
fier to the vehicle using appropriate hardware (not supplied).
RADIO VOLUME ADJUST
If the Radio repeat mode of the siren is going to be used then the RADIO VOLUME control may
need to be adjusted. This is a one time setting which depends on the radio connected and its
normal volume. On the hand control, set the slide switch to OFF, set the rotary switch to RADio,
and power switch to ON. With the volume on the radio itself set to normal level, set the RADIO
VOLUME control to the desired output level.