What kind of infrared thermometer do you have?

I am almost sure this is the problem- the digital infrared thermometer- and in my case, it is the ZooMed ReptiTemp. It had good reviews on Amazon, so I am really surprised at what I suspect is poor quality. I may just go boil a pot of water to get a known temp and compare. Aside from that, I will hold off on judging the VE-200 as being inaccurate, although I am replacing it with the HerpStat 2 anyway .