The Broan® ZB110HL1 ULTRA GREEN™ 110 CFM Multi-Speed Humidity-Sensing Ceiling Exhaust Bath Fan with LED Light delivers premium ventilation to help reduce airborne pollutants and offers easy installation, energy efficiency, consistent power, extremely quiet operation and multi-speed capability. With ULTRASense™ Humidity Sensing Technology, you no longer need to remember to turn the fan on when you shower. Without waiting for a relative humidity set point to be reached, ULTRASense™ Humidity sensing multi-speed fans react to a quick rise in humidity to increase fan speed and clear the mirrors. This ENERGY STAR® fan includes dimmable LED lighting to keep your bathroom illuminated whenever you need.