Proximity Sensor, Photoelectric Sensor, Vehicle Loop Detector manufacturer / supplier in China, offering M18 Retro-Reflective Infrared Photoelectric Switch Metal Photocell Sensors with CE, 12-240V Relay Output Photocell Light Sensor for Telescopic Sliding Door, Infrared Detction Light Curtain, Array Sensors for Vehicle Detection at Tolling Entrance and so on.