UFlex Power A Electronic Control Package - Dual Engine/Single Station - Electronic Throttle/Mechanical Shift [EM21]Power A EM21 Electronic Control Package Dual Engine Single Station Electronic Throttle Mechanical Shift Power A Mark II Electronics Control Systems Private Protocol can bus for data transmission Connection of multiple stations up to 4 controls Modular System Direct communication w electronic engines(SAE J 1939 or NMEA 2000) Plug'N Play connectivity Automatic engines synchronization Dock Assist Fully programmable shift delays EM21 Package Includes: