@hazymat said: What's the maximum length of cable I should use to connect the sensors to the nodes? I'm thinking CAT6 cable for e.g. 3 sensors in a ceiling back to a nano. Then another CAT6 to another sensor in a different place back to the same nano. Approximate distances of a given run would be 5-10m. At this moment i have DHT22 connected by about 12m long wires from ethernet cable, and it's work ok, but before this i tried to connect ds18b20 by 1-wire protocol directly to Raspberry Pi, and Domoticz, and it didn't work.