Antaira LMX-2004G-SFP 20-Port Gigabit Managed Industrial Ethernet Switches with 4x SFP and Extended Temperature Options

A fiber ring uses two SFP slots on every switch, so a cabinet that also feeds remote panels over fiber runs out of slots quickly. The Antaira LMX-2004G-SFP series is a family of managed industrial Ethernet switches with four fiber slots and 16 gigabit copper ports on a DIN rail, enough to close the ring and run two spurs from the same unit.

Each LMX-2004G-SFP has 16 10/100/1000Tx RJ45 ports with auto MDI/MDI-X and four 100/1000 SFP slots that take single-mode or multi-mode transceivers, on a 40 Gbps switching fabric. Switching is store-and-forward with an 8K MAC table, a 4 Mbit packet buffer and 9.6K jumbo frames. Light Layer 3 adds static routes and DHCP option 82 to the Layer 2 feature set, so traffic can pass between subnets without a separate router. ITU-T G.8032 ERPS v1/v2 restores a broken ring in under 50 ms, with STP, RSTP, MSTP and LACP trunking, and the firmware covers VLAN, QoS with DSCP, IGMP and MLD snooping, DHCP snooping, LLDP, sFlow, RMON and Modbus TCP. Access is secured with 802.1X, SNMP v3, HTTPS and SSHv2, and an RS232 console in RJ45 plus USB 2.0 configuration backup help with set-up and swaps.

The series offers two temperature grades. The LMX-2004G-SFP is the standard build, rated -10 °C to 70 °C for heated cabinets and indoor panels, and the LMX-2004G-SFP-T is the extended temperature build, rated -40 °C to 75 °C for unheated outdoor enclosures. Both draw 18.4 W and list FCC, CE, UL 61010-1, NEMA TS2 and IEC 61850-3 Edition 2.0, the substation standard.

Antaira names power and utility, water and wastewater, oil, gas and mining, factory automation, security surveillance within transportation and ITS as applications for the LMX-2004G-SFP series, typically on SCADA and control networks. Every build runs on redundant 12 to 48 V DC inputs through removable terminal blocks, with overload current and reverse polarity protection, in an IP30 metal housing for DIN rail or wall mounting. Antaira lists IEC 60068-2-27 shock and IEC 60068-2-6 vibration, storage from -40 °C to 85 °C and 5 to 95% non-condensing humidity, and covers the series with its 5-year warranty. If you ask, we can pre-configure IP addressing, VLANs and ring settings before delivery.