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1. PRODUCT OVERVIEW
The TGS‑1080‑M12‑BP2 is an unmanaged industrial Gigabit Ethernet switch engineered for harsh‑environment transportation systems. Manufactured by ORing Industrial Networking Corp., this model belongs to the TGS‑1080‑M12 Series, which is designed for railway, vehicle, and rolling‑stock applications requiring high reliability, vibration resistance, and compliance with transportation standards. The device is identified by article number TGS‑1080‑M12‑BP2 and features eight 10/100/1000Base‑T(X) M12 A‑coded Ethernet ports, including two integrated bypass port sets for power‑fail continuity. Fully compliant with EN50155 and EN50121‑4, the unit is optimized for rugged environments where mechanical shock, vibration, temperature extremes, and electromagnetic interference are prevalent.

2. KEY FEATURES
The switch delivers eight Gigabit Ethernet ports with 8‑pin M12 A‑coded connectors engineered to maintain secure connections in high‑vibration conditions. Its two power‑failure bypass sets ensure uninterrupted network traffic even during total switch power loss, making it suitable for train backbone networks and mission‑critical vehicular communications. Core capabilities include auto‑negotiating 10/100/1000 Mbps speeds, flow control (IEEE 802.3x), store‑and‑forward packet handling, and an 8K MAC address table. Wide operating temperatures from −40°C to 70°C and an IP‑40 metal enclosure reinforce reliability across challenging environments. Redundant dual 12–48 VDC inputs on a 5‑pin M23 connector enhance system resilience, while LED indicators provide detailed status for power, fault conditions, link/activity, speed, and duplex/collision states.

3. TECHNICAL SPECIFICATIONS
Dimensions are 125 mm (W) × 65 mm (D) × 196 mm (H), with a weight of 1007 g. The enclosure is IP‑40 rated for industrial environmental protection. The eight Ethernet ports use 8‑pin A‑coded M12 connectors with specific pin assignments: BI_DC+, BI_DD+, BI_DD‑, BI_DA‑, BI_DB+, BI_DA+, BI_DC‑, BI_DB‑. The switch supports IEEE 802.3 (10Base‑T), 802.3u (100Base‑TX), 802.3ab (1000Base‑T), and 802.3x flow control standards. Power consumption is typically 6.24 W, with overload protection included but no reverse‑polarity protection. Operating humidity ranges from 5% to 95% non‑condensing, storage temperatures from −40°C to 85°C, and operating temperatures from −40°C to 70°C. Regulatory certifications include EMI (FCC Part 15, CISPR Class A, EN50155, EN50121‑3‑2, EN55011, EN50121‑4), EMS (EN61000‑4‑2/3/4/5/6/8/11), shock IEC60068‑2‑27, vibration IEC60068‑2‑6, and free fall IEC60068‑2‑32 compliance.

4. FUNCTIONALITY
As an unmanaged switch, the TGS‑1080‑M12‑BP2 offers plug‑and‑play Ethernet connectivity with automatic speed and duplex negotiation. It is designed for rolling‑stock networks such as train backbone systems, passenger communication systems, surveillance networks, and in‑vehicle data systems. The inclusion of two bypass port sets ensures that when power is lost, the bypass circuitry maintains physical link continuity for critical network paths. The device supports CAT3/4/5/5e UTP cabling up to 100 m per Ethernet segment, using M12 connectors for ruggedized connections impervious to vibration or mechanical disturbance. The switch is compatible with standard Ethernet devices such as IP cameras, NVRs, controllers, onboard computers, routers, and other industrial networking hardware.

5. COMPONENTS AND ACCESSORIES
In the package, the device includes the TGS‑1080‑M12‑BP2 switch unit and a Quick Installation Guide. Optional accessories include M12C cable sets for Ethernet connections. The device contains multiple integrated elements: eight M12 Gigabit ports, two bypass port sets (ports 5–8), relay output on a 5‑pin M12 A‑coded connector (supporting 3A at 24VDC), and an M23 5‑pin connector for dual‑input power. LED arrays are provided for power (PWR, PWR1, PWR2), link/activity, duplex/collision, and fault indication. Internal electronics include store‑and‑forward packet handling, flow‑control logic, and bypass circuitry.

6. INSTALLATION AND SETUP
Installation can be performed using wall‑mounting, utilizing four screws through keyhole‑shaped mounting apertures, ensuring mechanical stability and proper airflow. Grounding is required to limit electromagnetic interference; a grounding pin is included on the power connector. The power connector uses a 5‑pin M23 interface, requiring correct V1+/V1– and V2+/V2– wiring. Relay output wiring uses the M12 5‑pin male connector, with user‑activated alarm trigger events forming an open circuit when conditions occur. Ethernet cabling requires M12 8‑pin female connectors, with CAT5 or CAT5e cabling recommended for 1000Base‑T. No software configuration is required, but powering on will illuminate power LEDs and activate bypass circuitry. Operating ambient temperature must remain within −40°C to 70°C, with adequate ventilation to avoid heat accumulation.

7. PERFORMANCE AND CAPABILITIES
The switch supports full Gigabit bandwidth across all eight ports, with auto‑negotiation for 10/100/1000 Mbps and half or full duplex. The store‑and‑forward architecture ensures deterministic traffic handling and error isolation. The 8K MAC address table permits efficient support of large rolling‑stock network topologies. Flow control prevents packet loss during high‑traffic conditions. The bypass circuitry ensures that even when the switch fails or loses power entirely, bypass ports maintain physical link continuity, a critical requirement for railway backbone systems. Power consumption is low at 6.24W, contributing to overall energy efficiency in train systems. Mechanical robustness allows operation under continuous vibration, shock, and wide temperature variations, making the switch well suited for high‑speed rail vehicles, heavy machinery, and other rugged platforms.

8. STANDARDS AND COMPLIANCE
The switch is fully compliant with major transportation standards:
• EN50155 for railway electronic equipment environmental, EMC, and shock/vibration requirements
• EN50121‑3‑2 and EN50121‑4 for railway EMC immunity and emission standards
• EN55022 / CISPR Class A for electromagnetic emissions
• EN55011 and FCC Part 15 Class A for industrial EMI
• EN61000‑4‑2 (ESD), 4‑3 (RS), 4‑4 (EFT), 4‑5 (Surge), 4‑6 (CS), 4‑8, 4‑11 for immunity levels
• IEC60068‑2‑27 shock, IEC60068‑2‑6 vibration, IEC60068‑2‑32 free fall
These certifications confirm suitability for railway, vehicle, heavy‑industry, and high‑EMI installations.

9. ADDITIONAL INFORMATION
The TGS‑1080‑M12‑BP2 comes with a 5‑year warranty, consistent with industrial‑grade reliability expectations. ORing Industrial Networking Corp. provides technical support, documentation, and firmware updates (if required, though the device is unmanaged). Maintenance is minimal; periodic inspection of connectors, cabling, and grounding is recommended. The device’s IP‑40 metal enclosure provides moderate ingress protection but should be installed in protected areas or cabinets in extremely dusty or wet conditions. All specifications are subject to change without notice, and the product is available under the TGS‑1080‑M12 Series, version 1.0 documentation.

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