I have the RT 700 and the RT 340. I just did the ice water calibration test/comparison and I was getting 6-10 deg higher readings on the RT 700 probes and RT 340 probes VS my Thermopop and Maverick 732. I called RT and I was told that within a week or 2 they will have a fix or a way to recalibrate so hopefully its a simple quick fix.
I'm wondering if it has to do with the warehouse being at near sea level and us being at 3500 +/- feet above sea level? But it does sound like a common complaint from folks all over. I'm confident there will be a fix shortly, until then, adjust accordingly or use another temp prob for now.
Cheers,
SS