The uprox3 series of Factor 1 sensors features compact, 4-mm smooth barrel and M5 designs with a 1-mm switching distance, even for flush mounting. The series is available with robust PTFE-coated sensors in compact M8, M12 and M18 designs. Weldguard, which resists high heat and weld slag buildup, also is available. Like their predecessors, the sensors offer a high EMC stability and flexible mounting, including full flush mounting and precise switch points.