Product review (5 stars): They Work Perfectly!!!
I purchased two of these as we have to keep the humidity in our home monitored due to my wife having sinus problems and headaches if it gets too dry inside.

Both of the units work "Perfectly" and it's really nice to be able to have one of these on our living room coffee table and the other in our bedroom on our chest to be able to "quick check" the humidity at  quick glance.

Very Satisfied!!!