Kramer Electronics RC-8000 - Manual (Page 24)

Connecting Your Matrix Switchers
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Figure 7: RS-485 System Connection: Switchers and Remote Controllers
You can connect up to 24 remote controllers and up to 8 switchers per
system. However, when connecting less than 8 switchers, you can connect
more remote controllers 1 .
1 RS-485 connection supports up to 32 devices, that is, switchers and remote controllers. For example, when connecting 2
switchers per system, you can connect up to 30 remote controllers