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16 pins connector
back connector of Motorola Gm300 sm50..etc... movile radios
The pinout should fit 4 devices/models. Click to list>
Pin
Name		 Pin
Number		 Description
1 EXT SPK- Speaker conexion OUT -
2 EXT MIC Audio input for MIC
3 EXT PTT PTT push to talk (MIC PTT)
4 EXT ALARM External alarm HORN
5 INPUT FLAT Audio Input
6 SPARE SPARE Conexion
7 GND GROUND
8 COR (COR) Programable O/P
9 EMERG SW EMERGENCY Switch(Foot sw)
10 IGN Sense IGNITION SENSOR
11 RX AF OUT AUDIO OUTPUT FROM RECEIVER
12 I/O INPUT/OUTPUT PROGRAMMABLE
13 SW A+ SENSE SW SENSOR A+
14 I/O INPUT/OUTPUT PROGRAMMABLE
15 INT SPK + INTERNAL Speaker conexion OUT +
16 EXT SPK + EXTERNAL Speaker conexion OUT +
Pinout status: +1 -0
According to 1 reports in our database (1 positive and 0 negative) the Accesories for Radios SM50-GM300 pinout should be correct.

Is this pinout
NO DIY devices
Accesories for Radios SM50-GM300 visual pinout:click to enlarge
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