Proximity Sensor, Photoelectric Sensor, Vehicle Loop Detector manufacturer / supplier in China, offering Infrared Photoelectric Switch Photocell Sensor for Commercial Roll-up Garage Door, Linear Potentiometer Infrared Opposed Photoelectric Switch for Car Positioning Detection, 10-30V Diffused 1.5m Infrared Security Light Sensors Photoelectric Switch Exporters Tianjin G-Tek and so on.