Logic Output, Slot Type Photointerrupters are used for detecting the interruption of light beams. They consist of a light source and a receiver housed in a slot-shaped enclosure. When an object obstructs the light beam, the photointerrupter outputs a logic signal, commonly used in automation and control systems for tasks like object detection, counting, and position sensing. These sensors are reliable, compact, and offer fast response times, making them suitable for various industrial and consumer applications. Typically, standard slot-type photointerrupters without specialized features can range from a few dollars to around $20 or more per unit. When purchasing the photointerrupters, ensure compatibility with your application's requirements, including operating voltage, output logic levels (such as TTL or CMOS), and environmental conditions like temperature and humidity. Additionally, evaluate the sensor's response time and resolution to ensure it meets your system's speed and accuracy needs.