The Feuchteregler MFR012 Mechanical Humidity Controller Hygrostat Connect Fan Heater for TV Cabinet Humidity Adjuster The Feuchteregler MFR-012 Mechanical Humidity Controller Hygrostat Connect Fan Heater for TV Cabinet Humidity Adjuster is a versatile and easy-to-use humidity controller that is perfect for a wide range of applications. It features a mechanical design that is simple to set up and use, and it can be used to control the humidity in a variety of environments, including TV cabinets, greenhouses, and storage rooms.