I want to transmit data from multiple sensors to an Arduino and distance would be approximately 120 meters.
What protocol or configuration should I use?
Actually I am trying to read values from 5 temperature sensors located in 5 different spots of warehouse. I want to read them and trigger some relay based on the values.
I thought about I2C but I have read somewhere that its not built for long distances. Also thought about RS-485, but I don't know if that supports bus (connect all sensors to same line).
Which solution do you suggest?