ICP DAS USA RFU-433 Quick Start Manual page 4

7. Application Example
PC can control RS-485 modules 1 ~ 3 through a RFU-433.
And control modules 4 ~ 6 through another RFU-433.
If these two RFU-433 are far away.
Users can add a RFU-433 with repeater mode between these two RFU-433.
RFU-433 Quick Start v1.00, January 11, 2019 -------------------------------------
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