GCU-44 control panel contains GCU-10 automatic engine control unit and DSP-10 Genset multi-function display module, which is specially designed to replace NEXYS controller. Simply connect the corresponding wire of the new harness of the GCU-44 to the original connector to easily complete the replacement. For detailed functions and settings of GCU-10 and DSP-10, refer to the contents of the user manual below.