XX ultrasonic sensors from Telemechanique provide non-contact level monitoring with sensing distances from 50 cm to 2 m, adjustable via teach mode. Available in Ø18 mm and Ø30 mm cylindrical housings, these sensors feature diffuse, reflex and thru-beam detection modes, high electromagnetic interference immunity (E2-certified), synchronization capabilities to prevent cross-talk in multi-sensor installations, reliable detection of small or curved targets regardless of surface characteristics, and easy setup through Ultrasonic XX configuration software.