4 port Unmanaged Hardened Fast Ethernet Switch going obsolete
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Unmanaged Hardened Fast Ethernet Switch
(4) 10/100Base-TX Ports + (1) 100Base-FX Port




The SISTF101x-241-LRT switch family contains simple “Plug-and-Play” multi-port switches used at the edge of a hardened network to provide connections for devices in hazardous locations. Depending on the model, these switches can provide multimode or single mode fiber connections with SC or ST connectors for extended distance communications up to 20 kilometers. These switches are Class 1, Div 2 certified, have redundant input power connections, and a fault alarm relay to ensure safe reliable operation in temperatures between -40°C and +75°C.

Transition Networks’ hardened switches are certified to operate reliably in harsh environments such as those found on factory floors, outdoor enclosures or other hazardous environments.

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  • Auto-Negotiation
  • Auto-MDI/MDIX
  • DIN Rail Mounting and Wall Mount Brackets Included
  • Extended operating temperature (-40°C to 75°C)
  • Dual Auto-Sensing Redundant DC Power Inputs
  • Barrel connector interface cable included for connecting external AC/DC power supply
  • Class 1, Div 2 Certified


Standards IEEE 802.3
IEEE 802.3u
IEEE 802.3x
Switch 1: Full-Duplex Fiber/Half-Duplex Fiber
Status LEDs PWR (Power): ON = Unit has power connected
PWR 1 (Power): ON = primary power connected
PWR 2 (Power): ON = backup power connected
Fault: ON = Power failure or port link failure
LNK/ACT (fiber): ON = Link; Flashing = data
FDX/COL (fiber): ON = Full-duplex mode;
Flashing = collisions occurring
RJ-45 (Ports 1 – 4): ON orange = Full-duplex
mode; Flashing orange = collisions occurring; ON
green = UTP link; Flashing green = data
Dimensions Width: 1.2” [30 mm]
Depth: 3.7” [95 mm]
Height: 5.5” [140 mm]
Power Consumption 3.3 Watts
Power Input 12 to 48 VDC, 18 to 30 VAC, 0.2A-0.7A, redundant
inputs with reverse polarity protection; Additional
barrel connector
Ingress Protection IP30
Environment Operating: -40°C to 75°C
Storage: -40°C to 85°C
Humidity: 5% to 95% (non-condensing)
Altitude: 0 – 10,000 ft.
Weight 2 lbs. [0.90 kg]
Compliance Safety: UL 60950, UL508, CSA C22.2 no 60950
UL Class 1 Div 2 for hazardous environments
CISPR/EN55022, EN60950 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)
Warranty Lifetime

Ordering Information

SKU Description  

(4) 10/100Base-TX (RJ-45) [100 m/328 ft.]
+ (1) 100Base-FX 1300nm multimode (ST)
[2 km/1.2 mi.] Link Budget: 11.0 dB

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(4) 10/100Base-TX (R -45) [100 m/328 ft.]
+ (1) 100Base-FX 1300nm multimode (SC)
[2 km/1.2 mi.] Link Budget: 11.0 dB

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(4) 10/100Base-TX (RJ-45) [100 m/328 ft.]
+ (1) 100Base-FX 1310nm single mode (SC)
[20 km/2.4 mi.] Link Budget: 17.0 dB

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