Flex power feed DUOline for two-circuit track lighting system The Flex power feed DUOline is designed for the matching two-circuit track lighting system. Power feed with an electronic phase changer makes it possible to switch the system into two lighting groups even with 3-core power cables. By operating a wall switch or dimmer several times, the phases are switched and/or dimmed individually or together - Requires one longitudinal connector when used as an end power feed or two longitudinal connectors when used as a central power feed (see accessories) - Max. 200 W per phase