Antaira LMX-1204G-SFP (-T) 12-Port Managed Gigabit Ethernet Switch, 4 SFP Slots

Antaira LMX-1204G-SFP 12-Port Managed Gigabit Ethernet Switch, 4 SFP Slots
Model: LMX-1204G-SFP
Availability: IN STOCK

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Antaira LMX-1204G-SFP 12-Port Gigabit Managed Ethernet Switch with 4 SFP Slots

Quality and performance are key ingredients for industrial networking. That’s why engineers and network pros turn to Antaira for their Ethernet needs.  The LMX-1204G-SFP 12-port managed Ethernet switch was designed to handle critical communications in automation, transportation, security, energy and public utility applications.


  • 12 total Gigabit Managed Ethernet ports
  • 8 Gigabit Ethernet RJ45 ports
  • 4 Gigabit SFP slots
  • Complete Layer 2 management with RSTP, ERPS, IGMP snooping, QoS, SNMP, DHCP, port mirroring and trunking,
    VLAN, 802.1X, Modbus TCP, UPnP, system warnings, MAC table, web console port and more.
  • Redundant 48V power input
  • Reverse polarity, voltage spike and surge protection
  • Metal IP30 DIN-rail and wall mount case
  • Choice of standard or extended operating temperature
  • 5 year warranty


LMX-1204G-SFP,    Standard operating temperature, -10 to 70°C
LMX-1204G-SFP-T, Extended operating temperature, -40 to 75°C

With 12 total ports - 8 Gigabit (10/100/1000TX) ports and 4 SFP ports - the LMX-1204G-SFP features complete Layer 2 management.  It offers a user-friendly web console for simple setup and deployment.  It uses the Ethernet Ring Protection Switching (ERPS) protocol for fast network recovery (< 50 milliseconds).  Additional management functions include QoS, SNMP, IGMP, VLAN, IEE802.1Q, alarming, fault handling and configuration backup.

An industrial Ethernet switch must endure harsh factory floor and outdoor conditions.  Naturally, the LMX-1204G-SFP does.  When its broad, standard operating temperature isn’t enough, choose the extended operating temperature for extreme heat or cold.  To compensate for unreliable power, the switch offers redundant 48V input power terminals and protection from reverse polarity, voltage spikes and current overload.  It also meets complete safety and electrical approvals. 

You also get the following with the LMX-1204G-SFP or LMX-1204G-SFP-T Ethernet switch -- documentation on CD-ROM, DC power cable, serial console cable and DIN-rail and wall mounting fasteners. 

With a 5 year warranty, you can rely on the LMX-1204G-SFP industrial Ethernet switch for dependability, long life and high-performance.  Learn more about the LMX-1204G-SFP by clicking the Downloads tab to view the documentation.  Or, contact our networking specialists at Westward Sales.

Total Ports12
Ethernet Ports8 x Gigabit ports (10/100/1000BaseTx ), auto negotiation speed, full/half duplex mode and auto MDI connection
Fiber Ports4 x 100/1000 SFP Slots
WavelengthRefer to SFP Module
StandardsIEEE 802.3, 802.3u, 802.3x, 802.3ad, 802.1d, 802.1w, 802.1s, 802.1Q, 802.1X, 802.1p, ITU-T G.8032/Y.1344 ERPS protocol
ProtocolIGMPv1/v2, SNMPv1/v2c/v3, TFTP, SNTP, SMTP, RMON, HTTP, HTTPS, Telnet, Syslog, DHCP Option 66/67/82, SSH/SSL, Modbus/TCP, LLDP, IPv4/IPv6
Industrial ProtocolModbus TCP
Jumbo Frame Support9.6 Kbytes
MAC Table Size8K
Network Management
Network RedundancySTP, RSTP, MSTP, G.8032 ERPS Ring Redundancy Recovery <50ms
IEEE 802.1Q VLANPort Based, Tag Based, 1 ~ 4094
IGMP Snooping / GMRPIGMP v1, v2 and Query Mode. Up to 256 groups
IEEE 802.1x AuthenticationRADIUS Support
QoSProvides 4 Priority Queues per Port
System Alert EmailBy Exception Through Email
Serial ConsoleRS-232 (RJ45 jack) with console cable, 115.2Kbps, 8,N,2
Configuration BackupUSB Port
System ConfigurationWeb Console, Telnet, CLI
Input Voltage12 - 48VDC, Redundant
Power Consumption15 Watts
Connection1 Removable 6-Contact Terminal Block
EFT Protection2,000 VDC
ESD Protection6,000 VDC
Relay Alarm Contact1A @ 24VDC
Reverse Polarity ProtectionYes
Overload ProtectionYes
EnclosureMetal, IP30 Protection
Dimensions54 x 142 x 99 mm
Weight2.2 lbs.
MountingDIN-rail or wall mount
Shock / VibrationIEC60068-2-27, IEC60068-2-32, IEC60068-2-6
Operating TemperatureStandard: -10 to 70°C or Extended: -40 to 75°C
Storage Temperature-40 to 85°C
Humidity5 to 95% non-condensing
RoHS CompliantYes
CertificationsFCC, CE, UL-61010-2-201(Pending)
EMCFCC Class A, CE EN6100-4-2, EN6100-4-3, EN6100-4-4, EN6100-4-5, EN6100-4-6, EN6100-4-8, EN6100-6-2, EN6100-6-4
Warranty5 Years
Download NameFile Size
LMX-1204G-SFP Datasheet408.14KB
LMX-1204G-SFP User Manual3.16MB