Photoelectric sensor produces a light (visible or infrared) from its light-emitting element. A reflective-type photoelectric sensor is used to detect the light beam reflected from the target. A thru beam type sensor is used to measure the change in light quantity caused by the target crossing the optical axis.
This safety device to avoid to collision of two electric overhead travelling crane working on the same rails. The offered collision switch is designed and precision-engineered for their higher functionality and durable work life.