The 6ES7194-2LH20-1AA0 is a 2-meter unshielded 24 V DC power cable for SIMATIC ET 200AL with straight M8 connectors at both ends—one plug, one socket. The gray PVC jacket identifies it as a power cable (4 Li9Y 0.50 mm2, unshielded). This is the standard short power jumper for daisy-chaining auxiliary 24 V DC between adjacent ET 200AL modules when the ports are easily accessible and overhead clearance is not restricted.

Straight vs angled—why pick this one?

Straight connectors are easier to grip and plug in—your fingers get a straight push onto the port rather than working around a 90-degree bend. They need about 30 mm of clearance above the port face. If the ET 200AL modules are mounted on open DIN rail with nothing above them, straight connectors are the simpler choice. If the ports are under a cover, machine guard, or in a tight enclosure corner, use the angled variant (6ES7194-2LH20-1AB0). The electrical performance is identical.

Gray means power—not bus.

This is an unshielded 24 V DC cable. It carries no data. The jacket is gray to distinguish it from green bus cables. Never plug a gray power cable into a green bus port—24 V DC on a PROFINET bus port can destroy the ASIC on modules without internal protection.