Enable the remote operation of the 2x Remote Extender on your UA13x or UA24x broadcast servo lens with RBF/HP12x (remote back focus) with this ECU Adapter from Fujinon. This adapter is compatible with the ECU-2C 2x Extender Change unit motor drive and works with only the UA13x or UA24x broadcast servo lens with RBF/HP12x (remote back focus).