Panasonic delivers the leading line of bathroom fans that exhibit great quality and engineering through Panasonic's "Ideas for Life". With the Pansonic WhisperWelcome Series, the convenience of automatic initiation of bathroom fans is detected by the state of the art Smarth Motion detection system. With these great features, this bathroom fan is a true testament to the great pioneering of Panasonic. It features the exclusive SmartMotion Technology sensor that automatically turns on the fan when someone enters the room. To create more efficiency and power conservation, the FV-05VFM2 features an automatic delay-timer that shuts off the unit 20 minutes after someone has occupied the room. The added delay timer allows for shorter periods of usage during down-time, allowing for more energy savings passed on to the consumer. With the automatic features built-in to the WhsiperWelcome exhaust fan, the need for a wall-switch is virtually eliminated. With the performance ventilation blowing at 50 CFM, the Panasonic FV-05VFM2 still only produces 0.4 sones of noise, allowing you to enjoy the peace of mind of quiet and efficient bathroom ventilation in your home or business.