Aprilaire Manual Mode Resistor 4336 automatic control uses either the manual mode resistor or an outdoor temperature sensor (part number 8052). It needs one or the other to function properly. The 4336 can be used with the #56 or #58 digital control. Part includes 46K resistor and manual mode dial sticker. We recommend that any wiring on your humidifier be completed by an Aprilaire contractor.
Aprilaire Replacement Manual Mode Resistor, For Use With: Model 400/500/600/700/760/768 Humidifier, 3-1/2 in L