A connection cable with a corresponding coupler is needed to connect transmitters, receivers and compact opto sensors with an M8 or M12 connector.

There are connection cables with 3-pole thread M8 or 4-pole thread M12 in straight or right-angle designs. Cables with integrated LED in plug are suitable for compact opto sensors because they show the switching state immediately.

All cables are available in lengths of 5 m (16 ft), 15 m (50 ft), or 35 m (115 ft). The type M12 has a 4-pole and the type M8, a 3-pole plug. All cables have three open-ended wires at the opposite end of the cable.