Vishay-Optical-Switch-Phototransistor-Output-Vishay-TCRT5000L-p-This-reflective-sensor-contains-an-infrared-emitter-and-phototransistor-in-a-leaded-plastic-package-designed-to-exclude-visible-light-The-specification-and-feature-set-of-this-optical-sensor-makes-it-ideal-for-line-tracking-and-following-and-also-suitable-for-applications-such-as-position-sensor-for-shaft-encoder-detection-of-reflective-materials-limit-switch-for-mechanical-motion-etc-p-Vishay-TCRT5000L-Optical-Switch-Phot