The Ramsey SonaTech Sonic Level Indicator uses sound waves to accurately determine the level of solids or liquids in any bin, tank, silo or other type of container. It utilizes frequencies lower than competitive models in order to more effectively penetrate dust, steam, vapors and other harsh environmental obstacles. This system provides precise and reliable readings from a bin in any situation. It is easy to install and operate, requiring a minimal amount of operator input to set up and calibrate.