Automatic Door, Automatic Gate, Automatic Window manufacturer / supplier in China, offering PT09-Laser 10m Three Frequencies Optional Wired Laser Beam Safety Sensor for Gate, PT05-Y IP55 20m Inductivedistance Three Frequencies Optional Wired Infrared Beam Sensor Gate, PT06-Y 20m Inductive Distance Three Frequencies Optional IP54 Wired Photocell Beam Sensor for Gate Motor and so on.