As I understand the Progressive 9200 series converter/charger the 4 stage microprocessor controlled charging regulating system is BUILT IN TO ALL 9200 SERIES CONVERTER/CHARGERS. The remote pendant for the 9200 series simply gives you a status indication of what mode the charger is in via the green LED light, and the ability to manually override the microprocessor's decision of what mode to currently have the charger in via the pushbutton switch.