Hygrostat ES 660
For either wall or duct mounting. Regulated on internal potentiometer.
Hygrostat ES 965
For wall mounting, regulated on rotary knob. Available for either 12V or 230V supply.
MoistureSwitch ES 684
Used with Moisture Strip ribbon. Measures condensation and surface humidity. 230V supplied. 0-10V output for measured humidity 0-100% and relay point, which switches at 80% humidity.