Description:This Cat harness is one of two required to give technicians and customers the ability to output PLE601 Network Manager ECM data to an RS232 or RS485 format. This part number is for the connection to PLE601. Other required part 542-5351 for the equipment panel connectionAttributes:Three modes of functionality - RS232, RS485 4-wire, RS485 2-wireApplications:• Gensets• Consult your local Cat dealer for more information.