The Leuze HRT46B is a universal, red-light scanner that either has a teach-in function that can operated through a teach line or a mechanical adjustment. It is an adjustable scanner with background suppression and has an extra bright light spot for basic alignments. Its multiturn potentiometer gives the scanner an extra scanning range, and switching outputs for optimal application. It is very reliable in detecting light and dark surfaces including inclined ones. It has a high performance reserve and a lockable button to protect it from manipulation.