I-View FAC – 500 FingerKey Access Controller DVR - Manual (Page 23)

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2.2.5. RS232 and Ethernet Connection
FingerKey can connect with PC through RS232 or Ethernet
GND GND
+12V Power RS232 RXD
Lock COM RS232 TXD
Lock NO GND
Lock NC RS485 A
GND RS485 B
Alarm＋ GND
Alarm— DATA0
Button DATA1
GND +5V Output
Bell＋ Door Sensor
Bell— GND
1 CD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
NIC