Shanghai wafer microelectronics co, ltd was built up at 2004 and now has been aknowledged as the leader in the development, manufacturing and distribution of sensors for automatic doors around chinese market. And also get a constant increase in the world market. Wafer is specialized in automatic door sensor, automatic door safety beam sensor, infrared and microwave contactless switch, active and passive infrared control system, automatic door spare parts, vehicle loop detector, program switch and automatic door hopping code remote control system. Wafer provide the customers with the best sensor and switch solutions for automatic door and gate. Wafer has built two reliable system: Sensor system and remote control system for automatic door and gate control and also wafer hope to have a wide cooperation with companies from all over the world. And we will provide you our best products and best service. Now our clients covers not only in china but also in singapore, taiwan, south korea, in