PAULY transmitter, PAULY photoelectric switch, PAULY grating, PAULY, fotoelektrik pauly, PAULY sensor, Germany PAULY, PAULY grating, PAULY reflection grating, PAULY diffuse reflection grating, PAULY infrared hot metal detector, PAULY weld (mark hole) detector, PAULY sheet pinhole detector (φ≥0.2mm), PAULY crane anti-collision protection grating, PAULY detection sheet grating ruler, PAULY high temperature grating