Stego 01220.0-00 Vertical Hygrostat Mechanical SPDT Relative Humidity Controller

Stego 01220.0-00 Vertical Hygrostat Mechanical SPDT Relative Humidity Controller.  The 01220.0-00 is a vertical Mechanical Hygrostat designed to control the relative humidity inside enclosures. When connected to an enclosure heater (dehumidifier), it will energize the heater at the humidity set point in order to raise the dew point. This helps prevent damage and malfunction of electronic components caused by condensation and corrosion. The MFR 012 can also be used to control cooling fans, warning lights or other devices. It comes with light gray plastic housing and SPDT/change-over contact.