NEW IN BOX This rotary dial dehumidistat control is for the on/off control of the exhaust fan based on the humidity level of the room. Upon an increase in ambient relative humidity above the set point, the control will automatically turn the exhaust fan on until the humidity level has decreased below the set point at which time it will automatically turn the exhaust fan off. 7.5amp - 125 V.A.C. x watt output.

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