Yes. It doesnt make sence why you would put the probe on the heat tape. Let me specify clearer. Maybe this makes it easier to understand cause i can see where the confusion is. My probes sit in a channel in the ceiling of the middle drawer. Therefore it is in the box on the ceiling. I dont use tops on my bins. This way i get an exact reading from in the tubs. I get the same temps all the way through the rack. Now obviouslly there is a couple degree flucuation as the thermostats cycles but not much and not for long. All my racks are 6 ft tall and i never hook more then one rack per thermostat. If i can figure out how to post picks on here ill show you what i am talking about