The HS-100/300/600 offers an innovative, non-contact ultrasonic
level sensor with no moving parts built for challenging water level
measurement. This accurate and reliable sensor is built for water
level measurement and general purpose, The unit is 9-30VDC and is
equipped with a universal display. HS-100/300/600 offers
user-programmable settings and, in addition to the displayed
values, features an LED light.