Thanks to the flexible Din-rail/wall mount installation and compact form factor of ET-0804C-M12 makes it ideal to set up in the limited cabinets that had space constraints such as the old type train, Light Rail Transit (LRT) or the metro cabins. By using this unmanaged M12 PoE Ethernet switch, each cabin is established with one simple and easy maintain network system. Each switch comes with 8 PoE port and 4 Fast Ethernet ports. One of them is connected to an industrial NVR that operates as the media for network data transmission, controlling the wireless AP, LED display, VoIP phone, IP camera, speaker etc. The PoE boost built inside ET-0804C-M12 supports 24V power input via its booster function and then provide the power output to the other devices with its PoE features. By this way the network topology getting simpler that can remove the need for extra wires and reduce costs.