Access Control Board Terminal Description
RS-232 Interface
G
Grounding
• This is the
RS-232
interface,
which cannot
be switched
by dialing.
• By default,
there is no
QR code
scanner on
the left
pedestal of
the device
entrance. If
you need to
connect an
additional QR
code
scanner, you
need to
connect it
through the
RS-232
interface
here. After
the cable is
connected to
the RS-232
interface, it
passes
through the
embedded
pipe and
connects
with the QR
code on the
left.
RS-232 G-
Connect to RS-232G-
RS-232 G+
Connect to Card Reader RS-232G+
G
Grounding
RS-232 H-
Connect to RS-232H-
RS-232 H+
Connect to Card Reader RS-232H+
Power Input
+24 V
24 VDC Power Input
/
GND
Grounding
DS-K3B411X Series Swing Barrier Quick Start Guide
26