Antaira LMP-1802G-SFP-T 18-Port Gigabit Managed DIN Rail Ethernet Switch with 16x PoE+ (240W), 2x SFP and -40 to 75 °C

Outdoor cabinets on ITS, utility and surveillance networks often hold more than a dozen powered devices, sit far from the network core and see no heating through the winter. The LMP-1802G-SFP-T is the extended temperature model in the Antaira LMP-1802G-SFP series, an 18-port Light Layer 3 managed industrial PoE+ switch rated -40 °C to 75 °C.

Sixteen 10/100/1000 RJ45 ports support IEEE 802.3at/af PoE+ at up to 30 W per port from a 240 W total budget, and two 100/1000 SFP slots take single-mode or multi-mode modules, so the fibre reach follows the transceiver chosen. Store-and-forward switching runs on a 36 Gbps fabric with an 8K MAC table and 9.6K jumbo frames. The Light Layer 3 firmware adds static routes and DHCP Option 82 to 802.1Q VLANs, QoS, IGMP v1/v2/v3 snooping, LACP and Modbus TCP, and ITU-T G.8032 ERPS restores the ring in under 50 ms, with STP, RSTP and MSTP as alternatives.

Power comes in on redundant 48 to 55 V DC inputs through removable terminal blocks, with overload current and reverse polarity protection. The switch draws 16.1 W itself, and a 24 V DC, 1 A relay contact and system warnings flag a lost supply or port fault, with broadcast storm protection built in. Security covers 802.1X, SNMPv3, HTTPS, SSH and port lock, and an RS232 console and USB configuration backup make a replacement unit quick to load.

The LMP-1802G-SFP-T runs fanless in an IP30 metal case for DIN-rail or wall mounting. Antaira lists FCC, CE, UL 61010-1 and NEMA TS2 approvals, with IEC 61850-3 Edition 2.0 for substation use, and covers it with its 5-year warranty. The LMP-1802G-SFP is the -10 °C to 70 °C model for heated cabinets, and the LNP-1802G-SFP-T is the unmanaged alternative at this rating. We supply and specify the switch, and can pre-configure IP addressing, VLANs and ring settings on request.