We do periodic training for our products and company as many industrial suppliers do. These trainings are typically for new hires, distribution staff and sometimes just to refresh our own minds. As a part of the photoelectric sensor training segment, we try to introduce the many different types of sensors we sell. But the most common types typically fall into two categories: Block or Tubular body types. And inevitably the question gets asked: “which one should I specify to the customer?” Great logical questions, but unfortunately no simple answer.