<p>The Ameriphone SR100 Telephone Ringer, by Clarity, is ideal for user in the home, the office or while traveling so you will never miss a call. </p><ul><ul><li>Super loud telephone ringer (95 decibels) </li><li>Adjustable ring volume </li><li>Adjustable ring tone control (250-1200Hz) </li><li>Dual modular phone jacks for easy connection to a standard analog telephone</li></ul></ul>