The lift covered a total of 21m, over seven floors of a Children's hospital. Not all floors were the same height. At each side of the lift was a row of LED light arrays, each being 500mm high. The project was to make a bank of three light arrays, on each side, follow the lift up and down. It was to give the children the impression of a space ship.

The panel build and site installation was by another company, but PJC Systems were approached to write the plc software.

An encoder was fitted to the lift drive mechanism, to give pulses to the plc system, and signals were picked up from the lift control system to confirm when the lift was at it's floor.