This transmitter displays, controls and transmits level. Mount the non-contacting ultrasonic sensor at the top of your tank and the compact, watertight electronics/display enclosure at a convenient location nearby. Use the built-in signal relay or isolated 4-20mA to transmit level to a PLC and the display as a local indicator. Features a simple, built-in menu/calibration system, temperature compensation and self-tunes to extended sensor cable lengths. LIT25, ideal indicating, controlling smart level transmitter for tank level systems.