The 'RS485 module (1 port, DIN rail)' PN2009-A1 provides one analog audio output connector ('X4') to connect components such as call station speaker.

Analog audio output connector - 'X4'

PN2009-A1' analog audio output connector - 'X4'

Pin

Description

Remark

1

SO+

Audio out +

2

GND

GND reference voltage

3

SO-

Audio out -