

Retro-Reflex Sensors work with red light or laser light. The transmitter and the receiver are integrated into a single housing and a reflector is required. If the light beam between the sensor and the reflector is interrupted by an object, the output is switched. Glossy objects such as mirrors, chrome plated or other reflective surfaces can be reliably recognized thanks to the integrated polarization filter.
| OLD104C0003 | 10000 mm | M18 × 1 | Laser (red) |
| OLM104A0002 | 10000 mm | 54,5 × 27 × 16 mm | Laser (red) |
| XD100PA3 | 14000 mm | M18 × 1 | Laser (red) |
| XD100PCV3 | 14000 mm | M18 × 1 | Laser (red) |
| XK89PA7 | 6000 mm | 32 × 16 × 12 mm | Laser (red) |
| XK89PB8 | 6000 mm | 32 × 16 × 12 mm | Laser (red) |
| XM98NDH2 | 15000 mm | 54,5 × 27 × 16 mm | Laser (red) |
| XM98PAH2 | 15000 mm | 54,5 × 27 × 16 mm | Laser (red) |
| XM98PDVH2 | 15000 mm | 54,5 × 27 × 16 mm | Laser (red) |
| XN96PA3 | 9500 mm | 76 × 32,5 × 18 mm | Laser (red) |
| XN96VBH3 | 9500 mm | 76 × 32,5 × 18 mm | Laser (red) |
| XN96VDH3 | 9500 mm | 76 × 32,5 × 18 mm | Laser (red) |
| XO89PA3 | 6000 mm | M12 × 1 | Laser (red) |
| XR96NCT2 | 12000 mm | 56,5 × 26 × 24 mm | Laser (red) |
| XR96PCT2 | 12000 mm | 56,5 × 26 × 24 mm | Laser (red) |
| XW100PA3 | 14000 mm | M18 × 1; angled | Laser (red) |
| L1FL66VB | 1400 mm | 16 × 25 × 4 mm | Red Light |
| L1FL66VD | 1400 mm | 16 × 25 × 4 mm | Red Light |
| LB66PC7 | 1300 mm | M8 × 1 | Red Light |
| LB66PC7K | 1300 mm | M8 × 1 | Red Light |
| LD86NCT3 | 6000 mm | M18 × 1 | Red Light |
| LD86PA3 | 6000 mm | M18 × 1 | Red Light |
| LD86PCT3 | 6000 mm | M18 × 1 | Red Light |
| LD86PCV | 6000 mm | M18 × 1 | Red Light |
| LD86PCV3 | 6000 mm | M18 × 1 | Red Light |
| LK89NA7 | 4500 mm | 32 × 16 × 12 mm | Red Light |
| LK89ND8 | 4500 mm | 32 × 16 × 12 mm | Red Light |
| LK89PA | 4500 mm | 32 × 16 × 12 mm | Red Light |
| LK89PA7 | 4500 mm | 32 × 16 × 12 mm | Red Light |
| LK89PB8 | 4500 mm | 32 × 16 × 12 mm | Red Light |
| LK89PD8 | 4500 mm | 32 × 16 × 12 mm | Red Light |
| LM89NCT2 | 6500 mm | 54,5 × 27 × 16 mm | Red Light |
| LM89PA | 6500 mm | 54,5 × 27 × 16 mm | Red Light |
| LM89PA2 | 6500 mm | 54,5 × 27 × 16 mm | Red Light |
| LM89PCT2 | 6500 mm | 54,5 × 27 × 16 mm | Red Light |
| LM89PCV2 | 6500 mm | 54,5 × 27 × 16 mm | Red Light |
| LN40PA3 | 11000 mm | 76 × 32,5 × 18 mm | Red Light |
| LN89PA3 | 5500 mm | 76 × 32,5 × 18 mm | Red Light |
| LN89PDV3 | 5500 mm | 76 × 32,5 × 18 mm | Red Light |
| LQ40PCT3 | 11000 mm | 40 × 40 × 70 mm | Red Light |
| LW86NCT3 | 6000 mm | M18 × 1; angled | Red Light |
| LW86PA3 | 6000 mm | M18 × 1; angled | Red Light |
| LW86PC3 | 6000 mm | M18 × 1; angled | Red Light |
| LW86PCT3 | 6000 mm | M18 × 1; angled | Red Light |
| LW86PCV3 | 6000 mm | M18 × 1; angled | Red Light |
| OLDK503A0002 | 5000 mm | M18 × 1 | Red Light |
| OLDK503A0091 | 5000 mm | M18 × 1 | Red Light |
| OLM653C0102 | 6500 mm | 54,5 × 27 × 16 mm | Red Light |
| OLWK503A0002 | 5000 mm | M18 × 1; angled | Red Light |
| OLWK503A0091 | 5000 mm | M18 × 1; angled | Red Light |
| RO88PB3 | 2500 mm | M12 × 1 | Red Light |
| RO88PD3 | 2500 mm | M12 × 1 | Red Light |