Hygrostat with Polyga® humidity measuring element with no need of a powersupply.
scale range 30…100%rh
with one or two changeover contacts (HG80 or HG80-2), Channelmount
version with internal adjusting knob available (HG80i)
scale range: 30 ... 100% RH
Accuracy> 50%: ± 3.5% RH
Accuracy <50%: ± 4% RH