Yes on the dump. I have a automatic standby gen, so I didn't need anything else more complicated.
I have..
2 manual temps on storage vents. (one on top of each 500)
2 temp on in and out leg of primary loop that feeds oil boiler loads
2 temp on wood boiler. input and output.
I also put 4 digital probes in the tanks. they are at the elbows on the supply/return from boiler. Those tie to a little digital internet enabled box. I lost one of them in the spray foam process. But I have two upper tank readouts, and one lower tank readout. I haven't gotten around to setting them up to email my wife when she needs to load the boiler
JP