The Probe Ultrasonic level transmitter: continuous, non-contact, 5 m (16.4 ft) range. Monitors level for liquids and slurries. With 3-wire relay output. Product is in phase out but still available to order, Consider replacing with: SITRANS Probe LU240 7ML51 Measuring range: 5 Meter (16.40 ft) Transducer/Process connection: ETFE, 2" NPT (ANSI/ASME B1.20.1) MODEL: 2 WIRE APPROVALS: IS,BAS,CE,CSA,FM AVAILABLE WITH 5 METER MEASUR- ING RANGE ONLY INSTRUCTION MANUAL ENGLISH .