12-Port Industrial Ethernet Switch with 8 interface 100M PoE M12 and 4 connectors Gigabit Bypass M12 TNS5800 series is layer 3 industrial Ethernet switch designed for rail transit. The product conforms to the requirements of industrial standard EN50155 and EN50121. Ethernet interfaces use firm and reliable M12 connectors which can adapt to usage scenario with vibration and shock. PoE power supply conforms to IEEE802.3af/at protocol standard, and ..