The FL series is a 100M unmanaged industrial EtherNet switch. It supports PROFINET protocol priority transmission. This series of products provides 100M electrical port interfaces and adopts DIN rail or wall-mounted installation methods to meet the needs of different application sites. The dial switch can realize loop detection, storm suppression, one-key VLAN, and flow control functions. The hardware adopts fanless, low power consumption, and has passed strict tests in accordance with industry standards. It can adapt to industrial field environments with strict EMC requirements and can be widely used in industrial fields such as rail transportation, smart cities, safe cities, new energy, and intelligent manufacturing.