Wondering how this works when your normal Wi-Fi can barely make it outside of your house?

Firstly this is not your regular Wi-Fi  system you would buy at the local computer store, this is professional grade purpose built equipment.

The best way to think of a Point to Multi-point system is that each link is like is like a virtual cable, running between the access point and the other device you are connecting to the link. This means no other device will connect to the signal in between them.  

Depending on the size of your farm you may deploy 1 or more similar PtMP networks that will make your farm a truly smart connected farm.