I checked it when I first bought it and both digital and regular had same readings.Last night after cleaning all cages I doubled checked with two gauges in each cage to be sure all are up to par.Turns out my digital was off about 18 percent on the humidity.I picked this thing up at the garden section at OSH, worked fine at first, but now I think I'm going back to the regular needle style gauges.Anyone else come across this problem.