E53-E01,COMMUNICTN UNIT RS-232C FOR E5ZE
E53-E04,COMMUNICATN UNIT RS-422 FOR E5ZE
E53-E8C,CURRENT OUTPUT UNIT FOR E5ZE
E53-E8Q,VOLTAGE OUTPUT UNIT FOR E5ZE
E53EN01,
E53-EN01,COMMUNICTN UNIT RE-232C FOR E5AK
E53-EN02,COMMUNICATN UNIT RE-422 FOR E5AK
E53EN03,
