INSTALLATION MTM800 Enhanced Mobile Terminal Installation Manual 57
Connection Plan for Accessory Connector Kit (GMBN1021)
Radios with Data Expansion Head Enhanced
To use a junction box with one of the MTM800 Enhanced mobile terminals fitted with a Data
Expansion Head Enhanced, always use the 9-pin RS232 port on the Data Expansion Head
Enhanced for PEI instead of the 9-pin RS232 port on the junction box (connector 6). Ensure to fit a
jumper between pins 6 and 15 of the Junction Box (connector 5) for the PEI to operate correctly in
this configuration.
Part Number/Description Cable Connectivity
GMSN4066 Speaker 13W
GMSN4078 Speaker 5W
GMMN4065 Visor Microphone
Cannot be used if connector 7 (TELCO) is in use.
RLN4856 Footswitch PTT
RLN4857 Push button PTT
RLN4858 Gooseneck PTT
These accessories can be used for PTT or
Emergency function.
RLN4836 Tri-State Emergency Footswitch and
Cable
HKN9327 Ignition Sense Cable
GMKN4084 Speaker Extension Cable
GKN6272 External Alarm
Relay and Cable
GLN7282 Buzzer
HKN9327 Ignition Sense Cable: If the ignition line is not
used, it needs to be grounded. Interference can cause
radio to hang.
SPKR- 1
SPKR+ 16
GND 7
MIC 2
PTT 3/
Emergency 9
GND 8
4A
+12V
Ignition 10
Car
Ignition Switch
1
16
5m
86
85
87
30
+12V (alternative)
Ext. Alarm 4
+12V
SWB+ 13
86
85
87
30
+12V
Ext. Alarm 4
+12V
Ext. Alarm 4
SWB+ 13
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