Controller for individual control and for setting the speed of locomotives with a Delta electronic circuit or a Digital decoder. The ”function” function on locomotives with digital decoders can be switched on and off with this controller. Simple installation between a feeder track and a transformer. Plastic housing. Unit has connections for the 6605 Delta Pilot. Dimensions 120 x 140 x 80 mm / 4-3/4* x 5-1/2* x 3-1/8*.