The WLT-704 Water Level Transducer is a precision instrument for remote monitoring of water surface levels. The WLT-704 uses a precision float-tape-counterweight mechanism to convert the water surface level into an electrical signal. The electrical signal measures the water level to the nearest 0.01 ft. The level measurement is transmitted as a 4 to 20 ma current, 0 to 1 ma current resistance value, or a voltage.