The new control uses Broan-NuTone’s proven SensAire humidity-sensing technology, which can detect a rapid rise in humidity to turn the fan on. It responds to increases in humidity up to 4X faster than other humidity sensors, to help fight mold and improve air quality.SensAire technology, responds to increases in humidity rather than waiting for condensation to form or a relative humidity set point to be reachedIt responds before moisture has chance to form to clear mirrors more quicklyPrecise sensitivity adjustment, variable setting from 20% to 80% relative humidity so the fan works when the homeowner wants it to regardless of climate or seasonContinuous ventilation mode, operates fan for set minutes per hour to achieve targeted average cfm levels and efficiently meet ASHRAE 62.2 whole house mechanical ventilation (WHMV) requirementsSensAire with relative humidity set point mode, offers the flexibility to satisfy local range-of-adjustment codesDecorator style design with settings behind concealed door, blends in seamlessly with existing switchesUser-adjustable delay shut-off timer, allows run-time customization for different bathroomsManual operation mode for ultimate user controlCan be used to comply with California Title 24 and CAL Green