Proximity Sensor, Photoelectric Sensor, Vehicle Loop Detector manufacturer / supplier in China, offering PF21b Diffuse Reflective Photocell Switch, Optical Photo Eye Sensor with Background Suppression Function, 150-900mm Retro Reflective Photocell Switch Infrared Photoelectric Beam Sensor PNP NPN, 5m 10m 15m 30m Infrared Beam Optical Sensor Photoelectric Photocell Switch and so on.