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: 3 - 4 Weeks or Less

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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.

With 12 total ports - 8 Gigabit (10/100/1000TX) ports and 4 SFP ports - the LMX-1204G-SFP implements 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, it features redundant 48V input power terminals and protection from reverse polarity, voltage spikes, and current overload. It also meets complete safety and electrical approvals.

Key Features

  • 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 case with DIN-rail and wall mount brackets
  • Choice of standard or extended operating temperature
  • UL, Class 1, Division 2 Certified
  • 5-year warranty


LMX-1204G-SFP,    Standard operating temperature, -10 to 70°C
LMX-1204G-SFP-T, Extended operating temperature, -40 to 75°C
LMX-1204G-SFP-T-CC, Same as above with conformally coated electronics. See the LMX-1204G-SFP-T-CC product page.

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.

CategoryEthernet Switch
Total Ports12
Ethernet Ports8 Gigabit (10/100/1000TX), Auto MDI / MDI-X
Fiber Ports4 SFP Slots (100/1000FX)
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
Industrial ProtocolsModbus TCP
Jumbo Frame Support9.6 kB
WavelengthRefer to SFP Module
MAC Table Size8 kB
Network Management
Network RedundancySTP, RSTP, MSTP, and G.8032 ERPS Ring Redundancy (recovery < 50 ms)
VLAN (IEEE 802.1Q)Port Based, Tag Based, 1 to 4094
IGMP Snooping / GMRPIGMP v1, v2 and Query Mode. Up to 256 Groups
AuthenticationRADIUS Support
QoS8 Priority Queues per Port
System Alert EmailBy Exception Through Email
Console PortRS-232 (RJ45 port)
Configuration BackupUSB 2.0 Port
System ConfigurationWeb Console, Telnet, CLI
ProtocolsIGMPv1/v2, SNMPv1/v2c/v3, TFTP, SNTP, SMTP, RMON, HTTP, HTTPS, Telnet, Syslog, DHCP Option 66/67/82, SSH/SSL, Modbus/TCP, LLDP, IPv4/IPv6
Power Consumption15 W
Connection1 removable 6-pin terminal block
Input Voltage12 to 48 VDC, Redundant
EFT Protection2,000 VDC
ESD Protection6,000 VDC
Relay Alarm Contact1A @ 24VDC
Reverse Polarity ProtectionYes
Overload ProtectionYes
EnclosureFanless, metal, IP30 Protection
Dimensions54 x 142 x 99 mm
Weight2.2 lbs.
MountingDIN-rail or wall mount
Shock / VibrationIEC 60068-2-27, IEC 60068-2-32, IEC 60068-2-6
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 61010-1, UL 61010-2-201, and Class 1, Div 2
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