So, I'm hoping to get a thermostat that comes with a 6 outlet strip, but, I'm baffled by it. How does it work to keep the temperatures correct when using 6 different outlets? If you have six shelves with heat tape on each shelf, all plugged in, what if the temperature is different on the bottom shelf as compared to the top shelf? I'm assuming that the thermostat only has one probe, so, umm, how do you make sure ALL of the shelves are at the correct temperature? If you get temp/humidity probes for each shelf, would you need to purchase a new thermostat if the temps are different for the different shelves or how would you correct this? Thanks in advance again!