I am no expert Monklet, but I would assume the little wall mounted thermometer measures more general ambient air conditions than the probe or infrared gun does. I would say the infrared would be better for measuring the temps inside the cage on top the bedding, cage bottom, etc., and not necessarily the ambient temps in the room. The probe is also limited to where its measuring the temps with relationship to its placement. The probes can read higher or lower based on stratification of the air temps in a room from ceiling to floor, or along the top to bottom of a rack. I experienced temps ranging from 86 to 81 degrees in my herp room this past summer. I would rely on the infrared gun and just check the actual cage temps where the animals are to be safe. You can also spot check various areas/surfaces of the room to make sure temps are within acceptable ranges for your purposes. I try to keep my brumation room between 55-60, but dont sweat it if the temps get much lower from time to time as long as above freezing.

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