NST

 NST Information & Communication's railway solution products include L2 switches installed on trains and industrial switches installed on the side of tracks. Vehicle-mounted L2 switches are used not only for CCTV cameras and broadcasting, but also for connection of destination displays, doors, and air conditioning control, and the ring network is formed with optical interfaces or copper wire interfaces between switches. The on-board L2 switch uses an M12 connector with a copper wire interface to ensure stable operation in harsh environments such as train vibration, temperature and humidity.