Being able to change points and operate accessories with the minimum of wiring and fuss is one of the main attractions of digital control and the Hornby Point Decoder allows the operator to do just that. Wiring points up in the old analogue fashion can be quite a daunting exercise. On some layouts which have numerous points this can mean that there are metres upon metres of cabling plus a whole bank of switches. Hours can be spent carefully wiring up the points only to find that there is a fault or an intermittent connection which means more hours of scrabbling about on the floor trying to locate the problem.With the Hornby digital system these horrors can be but a distant memory.
A drilling/mounting template for the accessory decoder is available here (Adobe pdf file, Acrobat reader recommended for viewing).