Product review (5 stars): Both humidity and temperature highs and lows are displayed.
This was just the item I was looking for to check the humidity in my converted garage after installing a dehumidifier. It is priced right, attaches easily to my air handler with the integrated magnet, and records both high and low humidity and temperatures. The display is easy to read from several feet away. The only control to set is the one choosing between F and C degrees for the thermometer part of the display.