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FB 250+ Installation Manual
Page 22 of 33
3.1.2 GPIO Output
The BDU has a dedicated circular connector to provide GPIO (General Purpose
Input/Output) interface to the external devices
.
GPIO Port Pinout
GPIO Port
Pin
Signal Name
Description of Signal
Color
Code
GPIO-1
RES_1
Reserve line 1
Black
GPIO -2
GND
Ground line
Brown
GPIO -3
LED_ENABLE
To enable LED ON
Red
GPIO -4
REM_ON_OFF
Remote ON / OFF
Orange
GPIO -5
BUZZER
Buzzer
Yellow
GPIO -6
GND
Ground line
Green
GPIO -7
TX_OFF
To turn off Transmitter off
Blue
GPIO -8
+5V_DC
+5V DC Output with up to 100mA
Purple
All wires for the GPIO connector shall use AWG 24 unscreened wire type.
1
4
7
I/O Connector Pinout