The photoelectric sensor, the transmitting and receiving components are arranged face to face in the same package, and the existence of objects in the induction groove is detected without physical contact. The width of ground grating is 0.5mm, 1.0mm and 1.3mm, and the width of induction groove is 3mm, 5mm and 10mm, which can be selected as the required size of the breaker. In order to meet the needs of as many applications as possible, Elleman's photoelectric plus-Plus sensors also have a number of other features, such as: Darlington, waterproof sealing and logical IC output, snap and screw mounting options.