&amp;lt;p&amp;gt;&amp;lt;span style=&amp;quot;font-size: x-small; color: #000000;&amp;quot;&amp;gt;Highly efficent DC Motor, noise level less than 1 Sone Cycle switch ON/OFF for humidity sensor mode and full speed mode Annual energy cost for 24/7 operation is approximately $15.51 Motor self-adjusts to humidity levels Blue and amber LED indicator lights to show humidty sensor mode and full speet mode&amp;lt;/span&amp;gt;&amp;lt;/p&amp;gt;