Professional 100m flex cable for RS485 (and Modbus) serial bus. 4 wires + shield: 2*0.22mm twisted (120 ohm impedance, for data) + 2*0.5mm (for supply) + shielding. External diameter 5.5mm.
The ideal cable to connect Creasol DomBus I/O expanders to Domoticz home automation controller.
This cable is specifically designed for RS485 serial bus (and Modbus).
The twisted pair (yellow+white 0.22mm² wires) has 120 Ohm impedance and permit to get a realiable data transfer at high bitrates and long distance (115200bps for several hundreds of meters).
The red/black wires (0.5mm²) can be used to supply all devices connected to the bus.
The shield is made by a aluminum foil + dreinage tinner copper wire, and should be connected to GND to avoid interferences and crosstalk caused by other cables.
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