Remote temperature monitoring

[Discus]

Ray - Mikrotik and Ubiquity make numerous off-the-shelf goodies that are pretty sweet. I'm rather partial to the Mikrotik stuff (most of my work nework backbone and complex stuff is Mikrotik, with a few Ciscos here and there as managed switches).

Using grid antennae, you'll easily go a couple of hundred meters (kilometers in fact). Set up is pretty easy.