The Telemecanique XUSL4E30H061LWH is a safety light curtain — a Type 4 optoelectronic protective device that creates an invisible detection field across a guarded opening. On a production line it sits between the hazard zone and the operator, typically guarding a robot cell, press brake, or automated assembly station. When a beam is interrupted, the safety outputs drop out faster than the machine can stop, which is the whole point.
Sourcing reality for this BOM line
Because the lifecycle is current, this is not a scavenger-hunt part.