HIKVISION DS-KV8102-IP - RS-485 Card Reader Wiring; External Elevator Controller Wiring

Video Intercom Door Station·User Manual
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4.2.5 RS-485 Card Reader Wiring
Figure 4-6 RS-485 Card Reader Wiring
4.2.6 External Elevator Controller Wiring
You can connect the door station to the elevator controller via RS-485 wire.
There are 4 groups of RS-485 interfaces on the elevator controller: group A, group B,
Group C, and Group D. Group C is used to connect to the door station.
Figure 4-7 External Elevator Controller Wiring