Specialists in “SOUND” Management
178 East Arrow Highway, San Dimas, CA 91773 ( 909 ) 305-9399
Made in the U.S.A.
Common Ground Music
Source
Floating Ground Music
Source *
Right
Violet
Right +
Violet
Common
Orange / Green
Right –
Orange
Left
Gray
Left +
Gray
Left –
Green
* IMPORTANT:
In a floating ground music system,
NEVER
con-
nect any of the four output wires together or to ground!
Standard Equipment Included
Part Description
Part Number
Quantity
Cable, SRS, 5 Conductor,
Switch, SPST with Fuse
800088
1
Foam, Double Sided
100720
2
Sigtronics Emergency Unit Radio / Music Switcher
Installation and Operating Instructions Models SRS-4, SRS-6 and SRS-12
Emergency Radio Switcher Features
The Emergency Radio Switcher allows AM / FM radio to be
heard whenever intercom and / or mobile radio communi-
cations are not occurring. Great for monitoring traffic and
weather reports, AM / FM radio will not be heard over mobile
radio, it will automatically be muted when communications
occur.
For Use With
Sigtronics UltraSound (US) systems
Installation
Attach the Radio Switcher in a convenient location using the
adhesive mounting strips. See table below and diagram on
page 2 to connect the wiring harness.
1. Unplug the P1-J1 connectors of the intercom and plug the
Music Switcher in line.
2. Connect the cable in the kit to the remaining connector
on the Music Switcher. Connect the RED wire to the music
ON/OFF switch center lug. Connect to +12 Volts through
the switch and fuse as shown in the drawings.
3. Depending on whether your music source has a common
ground output or floating ground output, connect it as
shown in table.
Operating Instructions
1. With music source turned
OFF
, adjust the intercom as
described in intercom system instructions.
2. Turn
ON
the music source and the music
ON / OFF
switch,
if equipped. During periods when there is no communica-
tions radio traffic and no one is speaking on the intercom,
the music source will be switched into the headphones.
Adjust the volume on the music source for a comfortable
volume level.
Warranty:
One year parts and labor.
