The Siemens 3RG7135-0BE00 is a SIMATIC PXO230 L18 laser thru-beam sensor configured as the transmitter half of a pair. Straight optics in an M18×64 cylindrical housing, it operates on DC 10-30 V and is rated IP67. The 2 m PUR cable carries 4×0.25 mm² conductors.
The 50 m sensing range is the maximum for this laser thru-beam pair in clean-air conditions; actual reach drops with dust, steam, or misalignment. The M18 barrel fits standard 18 mm mounting brackets and thru-hole clamps common on conveyor and packaging machinery. IP67 allows washdown in food or beverage zones, though the PUR cable jacket must be checked for chemical compatibility with the cleaning agents used.