SISTG-211 Series

Unmanaged Hardened Gigabit Ethernet Media Converter
(1) 10/100/1000Base-T Port + (1) 1000Base-SX/LX Port or (1) 100/1000Base-X Port

The SISTG-211 Series is a new generation of unmanaged hardened Gigabit Ethernet media converter. The converter can provide multimode or single mode fiber connections with fixed SC connectors for extending the Ethernet service distance over fiber. The converter also has a SFP version that provides the ultimate flexibility to choose the appropriate SFP module to match your communication and distance needs.

It has redundant input power connections to ensure safe reliable operation in temperatures between -40°C and +75°C. Lantronix’ hardened switches are certified with UL Class 1 Division 2 to operate reliably in hazardous locations such as Oil & Gas, manufacturing, and the chemical industry.

NDAA Compliant

SISTG-211 Series Overview


  • Auto-Negotiation
  • Auto-MDI/MDIX
  • Link Pass Through
  • Extended operating temperature (-40°C to 75°C)
  • Dual, Redundant, 12-48 VDC Power Inputs
  • Reverse Polarity Power Input Protection
  • Overload Current Protection
  • DIN Rail Mounting Brackets Included
  • Class 1, Div 2 Certified
  • Jumbo Frame: 9K bytes

SISTG-211 Series Tech Specs


  • IEEE 802.3
  • IEEE 802.3ab
  • IEEE 802.3u
  • IEEE 802.3x
  • IEEE 802.3z

Data Rate

  • Copper: 10/100/1000 Mbps
  • Fiber: 1000 Mbps
  • SFP: 100/1000 Mbps

Dip Switches

  • 1: SFP – Enable Auto Negotiation for the SFP / Force Gigabit speed for SFP port
  • 2: Copper – Enable Auto Negotiation for the copper / Force Gigabit speed for copper
  • 3: LPT – Enable/Disable Link Pass Through

Status LEDs

  • PWR (Power): ON = powered correctly
  • LNK/ ACT (ports 1-2): ON = Link;
  • FLASHING = data transmitting


  • Width: 1.2” [30 mm]
  • Depth: 3.86” [98 mm]
  • Height: 4.25” [108 mm]

Power Consumption

  • 3.4 Watts (max)

Power Input

  • 12 to 48 VDC, 0.2A-0.5A, redundant inputs with reverse polarity protection

Ingress Protection

  • IP30


  • Operating: -40°C to +75°C
  • Storage: -40°C to 85°C
  • Humidity: 5% to 95% (non-condensing)
  • Altitude: 0 – 10,000 ft.


  • 0.97 lbs. [0.44 kg]


  • SISTG1013-211-LRT-B & SISTG1014-211-LRT-B
    1,639,500 Hrs. Temp: 25.00° C.
    251,499 Hrs. Temp: 75.00° C.
  • SISTG1040-211-LRT-B
    1,628,265 Hrs. Temp: 25.00° C.
    248,741 Hrs. Temp: 75.00° C.


  • UL Class 1, Div 2 for hazardous environments CISPR/EN55022 Class A, FCC Class A, CE Mark, EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, IEC60068-2-32 (Free fall), IEC60068-2-27 (Shock), IEC60068-2-6 (Vibration)


  • 5 Years

SISTG-211 Series Downloads

Additional Product Information

Note: Some Documentation may have Transition Networks named or pictured. Transition Networks was acquired by Lantronix in August 2021. Learn more about the acquisition here.

Visio Stencils

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SISTG-211 Series

10/100/1000Base-T (RJ-45) [100 m/328 ft.] to 1000Base-SX 850nm multimode (SC) [62.5/125 μm: 220 m/722 ft.] [50/125μm: 550 m/1804 ft.] Link Budget: 8.5 dB

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SISTG-211 Series

10/100/1000Base-T (RJ-45) [100 m/328 ft.] to 1000Base-LX 1310nm singl mode (SC) [9/125μm: 10 km/6.2 mi.] Link Budget: 10.5 dB

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Lantronix Part #
SISTG-211 Series

10/100/1000Base-T (RJ-45) [100 m/328 ft.] to 100/1000Base-X SFP slot (empty)

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Compatible Accessories
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SFP Modules
SFP Modules
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Input: 90 ~ 264 VAC Output: 12 VDC, 1.3A, 18 Watts

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24VDC, 10 Watts – DIN Rail Mount

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