For MX light curtain applications that are not using junction blocks.

The MX4200 Light Curtain series require:
Detector unit: a 12-pin connector cable
Emitter unit: a 5-pin connector cable

The MX4100 Light Curtain series require:
Detector unit: a 8-pin connector cable
Emitter unit: a 5-pin connector cable

See the table below for different cable lengths and ordering part numbers.