ToughSonic 50 ultrasonic sensors have a maximum range of 50 feet (15.2 meters). Like all Toughsonic sensors, they are built for durability and ease of use in tough industrial environments. ToughSonic 50s are fully immersible, corrosion resistant, shock resistant and all around tough. They are also fully configurable with ultrasonic sensors with stainless steel housingsSenixVIEW software. ToughSonic 50s are available in three different housings, each with either RS-232 or RS-485 serial interfaces. These 9-wire sensors allow up to six simultaneous serial, analog and/or switch outputs. These workhorse sensors are used around the world in remote liquid level applications and harsh factory environments.