BreezSmart Ventilation Fans- SMT130M ENERGY STAR® qualified with DC motor technology Noise level of <0.3 sones at full speed Motion sensor triggers full speed operation until user-set delay time elapses after user leaves (0.5, 5, 15, 30, 45, or 60 minute delay time options) Adjustable low speed for continuous operation (0, 50, 70, or 90 CFM options) Annual energy cost for 24/7 full speed operation is approximately $12.10 Green and amber LED indicator lights to show low and full speed modes