The remote tank unit measures the air pressure in a tube placed in the tank near the bottom, converts this pressure into inches of water and transmits the result to the local display via the cable. The cable may be up to 5000 feet long. The display shows the depth in tenths of an inch. The accuracy is better than inch. The numerals in the display are " in height and are easily seen from a distance. The local display has an ac adaptor that plugs into normal ac power. No power is needed at the tank, the remote unit is supplied by the cable.

The system has a two year warranty.