User's Manual

PRODUCT INTERFACES
6
① ② ③
PIN1-PIN8
PIN2 PIN3
M
G
R L
PIN4
PIN1
3.5mm Earphone
DC Power Supply
Intercom 4-Wire
①
②
③
Interface: M G R L
Mic Impedance: 600
Speaker Impedance: 32
Power Supply Range: 7~36V DC
Pin 1: GND
Pin 2: NULL
Pin 3: NULL
Pin 4: POWER
Input Impedance: 10K
Pin 1: NULL
Pin 2: NULL
Pin 3: AUDIO OUT+
Pin 4: AUDIO IN+
Pin 5: AUDIO IN-
Pin 6: AUDIO OUT-
Pin 7: GND
Pin 8: GND