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Sub Oponal Board Terminal Descripon
GND (Reserved) Grounding
BTN Access to Exit Buon
GND Grounding
RS-485/232 RS-485 B+ Corresponded to UART6
Connected with QR Code
Scanner
RS-485 B-
RS-485 D+ Correspond to UART4
Connected with Card Reader by
Default
RS-485 D-
RS-232 BT Correspond to UART2
Connected with Fingerprint
Module by Default
RS-232 BR
RS-232 CT Reserved
RS-232 CR
5 VDC Power Output 5VOUT 5 VDC Power Output
GND Connected with Ground
Communicaon Interface BUS2 Connected with Sub Lane
Control Board
BUS Interface BUS1 TO SUB Connected with Sub Lane
Control Board
4.3.7 Card Reader Board Terminal Descripon
The card reader board can be connected to the access control board via RS-485 interface.
DS-K3Y220(L)X Series Flap Barrier User Manual
19
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