LevelPro’s ViewSonic Battery Operated Ultrasonic Level Sensor provides accurate and reliable continuous level measurement. The all plastic corrosion resistant enclosure makes it suitable for almost any environment. With no wiring required, the ViewSonic is simple to install with up to a 5 year battery life. The ViewSonic is available with just the sensor only, with visual level indication on the sensor, or with a remote display option. The remote display has a range of up to 200 feet and gives you the ability to monitor tank levels from a distance.The ViewSonic is not recommended for corrosive chemical applications where any foam, vapor, turbulence or condensate may be present.