A modern-styled, high performance fan/light that turns itself ON and OFF using built-in motion sensing and humidity sensing circuitry. The unit will have a motion control that will turn the light ON automatically when motion is detected. It shall be user-adjustable to turn OFF 5 to 60 minutes after motion is no longer detected. The unit will have a humidity control that will automatically turn fan ON when humidity increase is rapid to moderate (user-adjustable) or when humidity is higher than user-adjustable set-point (50%-100% RH) or when supply power is cycled from ON (for more than a second) to OFF (for less than a second) and back ON. It shall be user-adjustable to turn OFF 5 to 60 minutes after humidity has stabilized and is below user-adjustable set-point or after manually initiated by supply power cycling. Ventilator shall have steel housing with black, electrically-bonded epoxy paint. Mounting brackets to be to be adjustable. It shall be ducted to a roof or wall cap using 4 inch round ductwork. Automatic backdraft damper shall be located within duct connector. Blower assembly shall be removable, have a centrifugal-type blower wheel and a permanently lubricated motor, mounted with resilient neoprene vibration mounts.
