World-Beam QS18LD laser diffuse and QS18LLP laser retroreflective sensors offer sensing range of 300 mm and 10 m, respectively. Single-turn potentiometer on back allows adjustment. Crosstalk rejection algorithm protects against optical disturbances from adjacent sensors. Green and amber status LEDs are visible from 360 deg. In 18 mm threaded barrel housing, models operate on 10-30 Vdc with solid-state PNP or NPN outputs.