- Object recognition at great distances
- Presence control on conveyor belts
- Monitoring of stacking heights
- Mounting and supply control
- Gap control
In retro-reflex sensors, the transmitter and receiver are located in a single housing. They operate using red light, laser light and a reflector. The output switches if the light beam between the sensor and reflector is interrupted. Even shiny, chromed or reflective surfaces can be reliably detected thanks to the integrated polarization filter.