Pepperl+Fuchs has introduced RAL series slot style photoelectric sensors. The series features a multiple-beam light grid and one-piece metal slot housing with slot widths from 50 to 150 mm for simplified mounting and alignment. Units feature 5 kHz switching frequency, a built-in one shot timer, beam suppression and sensitivity adjustment, and can detect targets as small as 0.5 mm with response time  of less than or equal to 0.1 ms.