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8 port M12 D-code bus train vehicle metro subway railway 12v bypass unmanaged switch PoE industrial ethernet network switch

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Quick Details

Vehicle industrial switch: On-board industrial switch
Place of Origin: Guangdong China
Ports: ≤ 8
After-Sales Service: 3 Years
M12 industrial Ethernet switch: car networking switches
PoE Standard: IEEE802.3af/at
M12 4Pin: D-coded
Transmission Rate: 10/100Mbps
Model Number: R308B
Certification: FCC,ce,RoHS,En50155
Brand Name: InMax
Wide Temp. Models: -40 ~ +75°C
Function: POE
PoE Ports: 8 Ports Support POE
t Switch: M12 Railway Ethernet Switch: t Switch: M12 Railway Ethernet Switch
Products Status: Stock,Used
Switch Capacity: 1.6G
Communication Mode: Full-Duplex & Half-Duplex
Selling Units: Single item
Single package size: 30X30X15 cm
Single gross weight: 2.5 KG
Shenzhen InMax Technologies Co., Ltd.
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Product Description

◎ Meet the EN50155 railway industry standard requirements. Designed for railway transportation         applications.
◎ With 8×10/100M M12 BaseT  ports.and up to 8×PoE ports
◎ With 8 X M12 PoE ports, 15.4W/30W output power of each PoE port.
◎ Automatic recognition of power consumption and power supply mode of network equipment.
◎ Optional function: bypass function(1- 2 port) for power-off protection.
◎ Redundant dual 12/24/48VDC power inputs. Built-in overcurrent protection, Reverse connection protection.
◎ Support one-way relay alarm function.
◎ -40 to 75℃ operating temperature range (WT models).
◎ No fan, low consumption, industrial design standard, industrial grade electronic     components,environmental protection & lead-free production.
◎ High strength metal housing, support wall mounting.
◎ IP Rating up to IP40 (Optional IP67 waterproof housing).
◎ Without packet loss in 72 hours full load flow test.


The R308B series M12 unmanaged railway PoE Ethernet switches are designed for industrial applications in harsh environments. The M12 connectors ensure tight, robust connections, and guarantee reliable operation, even for applications that are subject to high vibration and shock. The R308B series Ethernet switches provide 8 fast Ethernet M12 ports, support IEEE 802.3/802.3u/802/3x standard, 10/100M speed adaptive, full duplex / half duplex communication and MDI / MDI-X automatic detection, to provide you with an economical industrial Ethernet solutions.
No fan, low power consumption design, working function more steady, and without packet loss in 72 hours full load flow test.
It accords with FCC, CE, RoHS standard and industrial design requirement. It can work in -40 to 75℃ working temperature and electromagnetic complex harsh working environment steadily, widely used in car PIS, CCTV, car security monitoring, smart factory, and provide reliable and quick solution for customers' Ethernet device connection.

Product Name
M12 8 Port 100M Railway PoE Industrial Ethernet Switch
M12 Ports
M12-4Pin D-Coded 100M Connector
M12 Power Port
M12-5Pin Power port connector
Input Voltage
IP Rating
144 × 140 × 34 mm
Operating Temperature
-40 to 75℃ 
Our Service

High quality

ODM DB9 railway switch board

      High quality

       ODM M12 bus switch board

 High quality

   110VDC railway gigabit switch board

Optional Accessories

       M12 A-code (8-Pin male)

10/100/1000 BASE-T RJ45 Interface, customized- length

       M12 X-code (8-pin male)

10/100/1000 BASE-T RJ45 Interface, customized- length

       M12 D-code (4-pin male)

10/100 BASE-T RJ45 Interface, customized- length

                 M12 A-code

       (8-Pin male)Connector

M12 A-code (8-pin male) Quick Connector

                M12 X-code 

       (8-pin male)Connector

M12 X-code (8-pin male) Quick Connector


    (6-pin Female)Connector

      M23(6-pin male) Quick Connector

Packing & Delivery

Packing Details: 1pcs/box, 6 pcs/carton, size:36x34.7x21.5cm/carton , G.W:6kg/carton  

Delivery Details : 3-5 days for samples if we have stock, 2-6 weeks for mass order