The Phoenix Contact FL SWITCH 1004NT-SFX (Part No. 1085169) is an unmanaged industrial Ethernet switch designed for reliable data communication in harsh environments. It features four 10/100 Mbps RJ45 ports and one 100 Mbps SFP port, supporting automatic data transmission speed detection and autocrossing for simplified installation. The switch supports Quality of Service (QoS) prioritization (IEEE 802.1p) and is PROFINET Conformance Class A certified, ensuring efficient real-time data exchange. Its compact design allows for DIN rail mounting, making it suitable for space-constrained control cabinets. The device operates within a wide temperature range and complies with Energy-efficient Ethernet standards (IEEE 802.3az), making it ideal for various industrial applications.