I have 3 accurites in my 5 drawer rack. One in the top, middle, and bottom I trust these for my ambient air and humidity levels. I also move them around if a snake goes into shed to monitor humidity. I then have a PE-1 (think thats the model) infrared temp gun that I use to check my suface temps on the floor of the tubs. I would personally recommend at least one accurite you can move around to keep an eye on your ambient temps and humidity throughout your enclosure that supplements the use of the temp gun which measure the oh so important surface temps on the floor of the enclosure.