u/IronicRobotics

I've got 16 50 gal heated water tanks each with an RTD and a 220V heating element. While I don't really need precision, probably +/- 5C is fine, I do want to control each tank separately.

I'm trying to figure out the best controller for my value. I was looking at something cheap like the REX-C100, but don't really think setting up a panel of 16 separate controllers makes sense either. I also don't know how much to trust this model.

While I basically need a water heater thermostat, I can't find any that take a separate input for temperature sensing. The barrels are not metal.

Is there some either more basic controller or multi-channel controller that would make more sense for my case?

Especially now that I'm working on a larger project and may have more moderate to advanced questions. However, most of the stuff on the sidebar is deprecated, 404ed, or dead.

Where would I look towards now?