Yes the thermometer was a digital device,its range is from 30 below zero to 800 degrees,its a very expensive model i use with my work,i took the reading's from various distances,its a point & shoot device much like a radar gun that cops use.
I know from experience with this model over the last few years of daily use that anything within 5 feet will give an acurate measurement,any distances within that range will/should all show the same measurements.