Hi-Tech Electronic System manufactures Retro-Reflective Photoelectric Sensors. Hi-Tech Electronic System offers various types of proximity sensors and special purpose sensors. The Retro-Reflective Photoelectric Sensors with modulated beam infra red technique are designed to operate in any type of environment unaffected by vibrations, ambient light, and weather condition. This photoelectric sensor can be used for all type of non-contact sensing, object detection in automation and counting indifferent industries, automatic door opening/closing [lifts] and also safety and security application.