Gree GMV5 Series Service Manual page 290

GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
A maximum of 30 Modbus gateways are
supported between two repeaters.
The total length of communication lines used
between two repeaters cannot exceed 800 m.
1.4.4.2 Appearance
Note: Actual product prevails. The picture is for reference only.
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