Rf20 Photoelectric Sensor Reflector, 2" Diameter Xu Founded over 90 years ago, Telemecanique Sensors is an independent brand of Schneider Electric, specializing in sensors and sensor-related technology. Telemecanique Sensors is a global player, present in more than 20 countries, with products distributed worldwide through a broad network of partners. Focused on 3 core values ? Simplicity, Proximity and Expertise ? we are experts in factory automation sensors as well as specialists in demanding applications, making our customers? lives "simply easy". Photoelectric Sensor Photoelectric sensors use light to detect Reflects from a target or thru beam that sends light to a receiver