Ultrasonic proximity sensors use sound waves to detect an object or measure distance and are unaffected by color, transparency, shininess, or lighting conditions. These sensors come with both discrete (presence) and analog (distance) outputs, offer detection ranges up to 1600mm, and integral 2m pigtail cable or quick-disconnect termination (model-dependent).
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Would you buy this item again? Yes
This product was easy to set up and works well in a clean environment. It is susceptible to insects flying through its field of view and in exterior applications, susceptible to wind. I would recommend the product for interior applications.