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: PVDF copolymer, 2" NPT ((Taper), ANSI/ASME B1.20.1) Execution / Approval: 2-wire, 24 V DC, CE . .