
2.58
0.81
7.13
3.07
GREEN
RED
BLACK
WHITE
YELLOW
BLUE
GND
BUSY -
DATA L
DATA H
POWER
BUSY +
TO REMOTE HEADTO INTERCOM
WHITE
BLACK
RED
GREEN
YELLOW
BLUE NOT USED
SPEAKER HI
SPEAKER LO
MIC HI
MIC LO
PTT
TO INTERCOM TO HEADSET MODULE
RJ-12 MODULAR PLUG RJ-12 MODULAR PLUG
4 3 2 1
Ground
Aux. In Low
Aux. In High
Aux. Out High
1
2
3
4
5
5 CONDUCTOR JACK
W/ GND RING
SPEAKER HIGH
SPEAKER LO
MIC HIGH
MIC LOW
PTT
BLACK
RED
GREEN
YELLOW
BLUE
WHITE
NOT USED
TO INTERCOM
5 CONDUCTOR PLUG
1
2
3
4
5
WHITE
BLACK
RED
GREEN
YELLOW
BLUE
WHITE
BLACK
RED
GREEN
YELLOW
BLUE NOT USED
SPEAKER HI
SPEAKER LO
MIC HI
MIC LO
PTT
4
3
2
1
5
TO INTERCOM
5 CONDUCTOR PLUG
1
2
3
4
5
TO DAISY CHAINED HEADSET
MODULE
www.firecom.com
DIGITAL INTERCOM
QUICK INSTALL & SCHEMATICS
REMOTE HEAD WIRING
PP-20 WIRING
HEADSET MODULE WIRING
WIRING SCHEMATICS
INTERCOM INSTALLATION
Mounting Flush to a Flat Surface
1. Remove the 4 Torx bolts (T-10) and nuts from the
corners of the remote head
2. Use the Remote Head as a template to mark and
drill (4) mounting holes: 7/64" diameter for sheet
metal screws or 5/ 32" for machine screws
3. Drill 3/8" hole in mounting surface and install the
supplied grommet. Pass the wire through
4. For inside installation, mount the panel using the
suppliedscrews (4), making sure the cable is not
pinched Recommended torque : 10 in-lbs
5. Determine the correct length for the CA cable,
and cut cable to correct length
Mounting with Bracket
1. Remove 4 Torx bolts (T-10) and nuts from the
corners of the remote head
2. Drill 3/4" hole at desired wire pass-through
location on mounting surface
3. Drill (4) mounting holes: 7/64" for #6 sheet metal
screws or 9/64" for #6 machine screws
4. Mount the bracket using included hardware.
Torque : 10 in-lbs
5. Pass cable through grommet and secure with
cable ties as shown
6. Adjust the panel to a desirable viewing angle with
the two hand knobs
1 2
PIN #2
RED
POWER CONNECTOR
ASSEMBLY
1.5 AMP FUSE
PIN #1 BLACK CLEAN WITH
WIRE BRUSH
CONNECT BLACK WIRE FROM PIN 1 TO VECHILES
NEGATIVE GROUND OR USE SUPPLIED SELF-TAPPING
SCREW & STAR WASHERS
REMOTE HEAD INSTALLATION
POWER CABLE CONNECTION
HEADSET MODULE WIRING
MR-OX
RADIO INTERFACE CABLE
HAND KNOB
CABLE TIES
GROMMET
#8 SHEET METAL SCREWS
USE 3/16” DRILL
MOUNTING BRACKET
AUX PLUG
PINOUT
PIN #1: BROWN - TX AUDIO HI
PIN #2: RED - TX AUDIO LO
PIN #3: ORANGE- PTT HI
PIN #4: YELLOW - PTT REFERENCE
PIN #5: GREEN - HOOK SWITCH RELAY (N.O)
PIN #6: BLUE - RX AUDIO HI
PIN #7: VIOLET - RX AUDIO LO
PIN #8: GRAY - HOOK SWITCH RELAY (N.C.)
PIN #9: BLACK - HOOK SWITCH RELAY (C.)