Unmanaged Hardened Gigabit Ethernet PoE+ Switch
(4) 10/100/1000Base-T PoE+ Ports + (2) 1000Base-X SFP Ports


SKU: SISTP1040-242-LRT Product Line:

Product Details


(4) 10/100/1000Base-T (RJ-45) PSE [100 m/328 ft.] (2) 1000Base-X SFP [110km/68.4mi]


These PoE products may be licensed under one or more of the patents listed at

Product Description

The SISTP1040-242-LRT switch is a simple “Plug-and-Play” multi-port switch used at the edge of a hardened network to provide connections for PoE devices in hazardous locations. The (2) gigabit speed SFP ports provide the ultimate flexibility in fiber connections and communication distances. The two uplink ports can also be used in a redundant ring for maximum network reliability. This switch is Class 1, Div 2 Certified, provides 30 Watts per port on all ports simultaneously, has redundant input power connections, and a fault alarm relay to ensure safe reliable operation in temperatures between -40°C and +75°C.


  • Provides (4) 10/100/1000Base-T(X) PoE (PSE) ports based on IEEE 802.3at Standard
  • (2) 1000Base-X SFP slots for daisychain
  • Supports dual 48 VDC power inputs for power redundancy
  • Polarity reverse protection
  • Auto-MDI/MDIX
  • Auto-Negotiation
  • Extended operating temperature (-40°C to 75°C)
  • Dry Contact Relay Alarm Output
  • DIN Rail Mounting and Wall Mount Brackets Included


Standards IEEE 802.3x
IEEE 802.3u
IEEE 802.3ab
IEEE 802.3z
IEEE 802.3at
IEEE 802.3af
PoE Pin Assignments Provides 30 Watts per PoE+ port, Mode A
Positive (VCC+): RJ-45 pin 1, 2.
Negative (VCC-): RJ-45 pin 3, 6.
Status LEDs Power 1 (Green), Power 2 (Green), P-Fail (Red)
Ethernet: Link/Activity (Green), Speed (Green), PoE
(Green) SFP: Link/Activity (Green)
Dimensions Width: 2.35” [59.6 mm]
Depth: 4.14” [105 mm]
Height: 6” [152 mm]
Power Consumption 5.5 Watts (without PoE)
125.5 Watts (full PoE)
Power Input DC V48(44V~57V), Redundant power,current over
load protection, polarity reverse protect
Fault Output Relay output contacts, 1A @ 24 VDC load capacity
Ingress Protection IP30
Environment Operating: -40°C to 75°C
Storage: -40°C to 85°C
Humidity: 5% to 95% (non-condensing)
Weight 2.65 lbs. [1.2 kg]
Compliance Safety: UL/cUL 508, Class I / Div 2 Groups A, B, C, D
Emissions: CISPR (EN55022); FCC Part 15 Class A;
CE Mark;
Immunity: EN61000-4-2(ESD); EN61000-4-3(RS);
EN61000-4-6(CS); CE EN61000-4-8;
Environmental: IEC60068-2-32 (Free fall);
IEC60068-2-27 (Shock);
IEC60068-2-6 (Vibration)
Warranty Lifetime

Ordering Information

SKU Description  

(4) 10/100/1000Base-T (RJ-45) PSE [100 m/328 ft.] (2) 1000Base-X SFP [110km/68.4mi]

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These PoE products may be licensed under one or more of the patents listed at