Duct/wall humidistat.
Electromechanical humidistat with change-over contact.
Electromechanical humidistat with change-over contact.
Electromechanical humidistat with a synthetic element. The setpoint knob can be locked.
Electromechanichal room humidistat for controlling humidification and/or dehumidification in HVAC systems. The setpoint knob can be locked. Can be used to control a humidifier…