Dupline® is a versatile bus for Industrial Applications and Building Automation. The Dupline® fieldbus concept represents innovative and lean technology in hardware elements and in the communication principle. Coding of the units is as easy as dialling a phone number. The data transfer is made with minimum of communication overhead. The low 1 kHz frequency allows signal transmission up to 10 km. High noise immunity, use of existing wires and free topology are further characteristics and advantages. Field Installation Bus, Safety Bus, Elevator Controls, Irrigation Systems, Home Automation Systems, Car Park “Guidance” System.