Photoelectric sensors are not a specific brand but a category of industrial automation devices used for detecting objects, distances, or colors. Prominent manufacturers include Omron (Japan), Keyence (Japan), Sick AG (Germany), and Banner Engineering (USA). These sensors are widely used in industries like manufacturing, packaging, and logistics. Key products include thru-beam, retro-reflective, and diffuse reflective sensors, offering high precision for object detection. Companies like Rockwell Automation (USA) and Schneider Electric (France) also provide photoelectric solutions under their industrial automation portfolios.