Ultrasonic proximity sensors with discrete outputs use sound waves to measure object distance and are unaffected by color, transparency, shininess, or lighting conditions. These sensors offer detection ranges up to 8000mm, with integral 2m pigtail cable or quick-disconnect termination (model-dependent).
Ultrasonic sensors are ideal for applications in which the sensed object is made of clear, transparent or varying surface color materials. You can standardize on one sensor for many materials, without any extra setup or sensing concerns.
UT2F series plastic ultrasonic sensors are
UT5L series metal ultrasonic sensors are