As i recall the 75 humidity is 1.8% and the 15 is 2% and from using both sensors the 75 is a little more accurate when the humidity is low by about 2%. The 15 tends to run a couple percent wetter.
As i recall the 75 humidity is 1.8% and the 15 is 2% and from using both sensors the 75 is a little more accurate when the humidity is low by about 2%. The 15 tends to run a couple percent wetter.