-14-
VOLUME CONTROLS
Radio Repeat Volume
The radio repeat volume is recessed on the
front face of the amplifier next to the
communication jack. This should be set when
the vehicle is parked. First set the volume level
of the vehicle’s two-way radio to its normal
operating volume. Adjust the siren’s rotary
selector switch into the RADIO position. Insert a
small, flat blade screwdriver into the RADIO
volume adjustment port. Turn clockwise
direction to increase the sound level.
PA Volume
The PA volume control is provided for public address volume. This is
located in the upper right hand corner of the control head. It
should be set when the vehicle is parked. Set the PA volume to the
maximum level with no feedback (squeal).
AUXILIARY INPUT
The auxiliary input may be connected to the vehicle horn ring or other switching
device. It provides the same operation as pressing the HORN button or can be
programmed to function like the MAN button
.
PARK KILL CUT OUT
During installation, the Park-Kill input may be connected to a door switch
(see page
2).
It will automatically turn off any siren tone when the door is opened. The siren
tone will continue to be cut off even when the door is closed. Changing any switch
or input will restore normal function.
(Operation CONT’D)
DETACHABLE MICROPHONE
(SS741MGX only)
The microphone (P/N P30232-2) can be used for public address
operation. It will override any siren tone when its push-to-talk (button on
the side) is pressed.
Connect the microphone to the adapter
harness (SWH-40). Review the diagram below
for proper pin layout. Note the ridge in the
connector.
The white amp connector can then be
attached to the corresponding
connector on the amp.
RIDGE
