SENSING WALL CONTROL: Sensaire technology responds to increases in rather than waiting for condensation to form or a relative set point to be reached PRECISE SENSITIVITY ADJUSTMENT: Variable setting from 20% to 80% relative so the fan works when the homeowner wants it to regardless of climate or season CONTINUOUS 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) requirements DECORATOR STYLE: Designed with settings behind concealed door blends in seamlessly with existing switches and décor USER-ADJUSTABLE: Delay shut-off timer allows run-time customization for different bathrooms within your home