Humidity Controller, MFR012 Mechanical Hygrostat Fan Heater Humidistat to Control The Electric Heating for improving Relative Humidity (MFR012): Amazon.com: Industrial & Scientific
Stego 13059.9-00 : CR 130 DIN Rail or Panel Mount Enclosure Fan Heater, 950W, 120 VAC, w/ Adjustable Thermostat 32-140°°F
Amazon.com: MFR012 Humidity Regulator, Mechanical Humidity Controller, Hygrostat for Dehumidifier Humidifier Reptiles Greenhouse Exhaust Fan Fermentation(MFR012) : Appliances