JES_V3_N1_A2 Siva Sankar Kavipriya Journal on Embedded Systems 2278 - 7895 3 1 7 11 Sensors, Features of Sensors, Types, Ultrasonic Principle This paper presents an up-to-date review on different types of sensors. Attention is focused on different types of sensors used in present days. The sensor technologies in use today are reviewed and classified according to their functions. This topic is extensive. In this paper, the sensors are detailed with respect to their features used in today’s technology. February - April 2014 Copyright © 2014 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2948