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1. Product Overview
The TGPS-1080-M12 is an unmanaged industrial Gigabit Ethernet switch belonging to the TGPS-1080-M12 Series. Article number: TGPS-1080-M12. Manufacturer: ORing Industrial Networking Corp. The product line includes multiple models such as TGPS-1080-M12, TGPS-1080-M12-24V, and TGPS-1080-M12-BP2-24V. These switches are designed for rugged transportation-oriented applications including rolling stock, railway systems, and vehicle environments. All models in this series comply with the EN50155 standard for railway electronic equipment and utilize M12 connectors for reinforced, vibration-resistant connections.

2. Key Features
- 8-port unmanaged Gigabit Ethernet switch with Power Sourcing Equipment (P.S.E.) capabilities.
- All 8 Ethernet ports support 10/100/1000Base-T(X) with PoE output.
- IEEE 802.3, 802.3u, 802.3ab, 802.3x compliant.
- IEEE 802.3at PoE support with up to 30 Watts per port.
- Total PoE power budget varies by model (e.g., 240W for TGPS-1080-M12, 60W–120W for TGPS-1080-M12-24V depending on voltage).
- Rugged M12 connectors for secure communication in high‑shock and high‑vibration environments.
- Dual redundant DC power inputs for uninterrupted operation.
- Designed for harsh temperature environments (-40 to 70°C operation).
- Device Binding security support.
- Relay output for fault detection (3A at 24VDC).
- Optional bypass-port model (TGPS-1080-M12-BP2-24V) to maintain data flow during power loss.
- EN50155-compliant design for rolling stock reliability.

3. Technical Specifications
Dimensions: 125 mm (W) x 65 mm (D) x 196 mm (H).
Weight:
- TGPS-1080-M12: 930 g
- TGPS-1080-M12-24V: 988 g
- TGPS-1080-M12-BP2-24V: 996 g
Enclosure: IP-40 (some documents reference IP-30 enclosure; standard model lists IP-40).
Storage Temperature: -40 to 85°C.
Operating Temperature: -40 to 70°C.
Operating Humidity: 5% to 95%, non-condensing.
MAC Address Table: 8K entries (standard model) or 2K on BP2 variant.
Processing Method: Store-and-Forward switching.
Connectors: 8-pin A-coded M12 for Ethernet; 5-pin M23 for power inputs; 5-pin A-coded M12 for relay output.
PoE Output: Up to 30W per port.
Power Consumption:
- TGPS-1080-M12: 11 W (excluding P.S.E. load)
- TGPS-1080-M12-24V: 6 W (excluding P.S.E. load)
- TGPS-1080-M12-BP2-24V: 11 W (excluding P.S.E. load)

4. Functionality
The switch provides unmanaged Ethernet switching combined with PoE power distribution to connected Powered Devices such as IP cameras, access points, and sensors. Each of the eight ports can supply PoE power and transmit data simultaneously over twisted-pair cabling. Dual DC power input ensures reliable failover; when the primary input fails, the secondary immediately takes over. The BP2 model contains two bypass port pairs (ports 5–8) that maintain traffic flow even during device power loss, ensuring communication continuity in transportation networks. The unit is suitable for use in railway operations, onboard vehicle networks, and industrial environments requiring robust mechanical integrity and resistance to shock, vibration, and temperature extremes.

5. Components and Accessories
Standard Package Contents:
- 1 unit of TGPS-1080-M12 (or TGPS-1080-M12-24V, or TGPS-1080-M12-BP2-24V depending on order).
- 1 Quick Installation Guide.

Optional Accessories:
- M12C: M12 cable accessories.
- Additional mounting hardware depending on installation requirements.

Connectors and Pin Definitions:
M12 8-pin A-coded port for 10/100/1000Base-T(X) with PoE output:
- Pins include BI_DC+, BI_DD+, BI_DD, BI_DA-/PoE Vout+, BI_DB+/PoE Vout, BI_DA+/PoE Vout+, BI_DC, BI_DB-/PoE Vout.
RJ45 pin definitions also supplied for reference when using P.S.E. RJ45 equivalents.
Relay output uses M12 A-coded 5-pin male connector (3A @ 24VDC capacity).

6. Installation and Setup
Installation is typically wall-mounted using four screws through keyhole-style apertures. A 2 mm gap is recommended for sliding the switch onto the mounting screws. Grounding must be established prior to power connection to reduce electromagnetic interference. The power connection uses a 5-pin M23 connector; users must insert the cable and secure it by tightening the outer ring. Relay outputs are connected via M12 A-coded 5-pin connectors. For models with bypass ports, bypass function wiring must follow manufacturer instructions. LAN connection uses M12 8-pin female A-coded connectors and supports CAT3, CAT4, CAT5, or CAT5e UTP cables depending on speed requirements (up to 100 m). Reduced airflow, ambient temperature, and mechanical load considerations must be addressed during installation.

7. Performance and Capabilities
Switching: Store-and-Forward architecture ensures frame integrity and deterministic forwarding.
Speed Support: Auto-negotiation for 10/100/1000 Mbps Ethernet connectivity.
PoE Output:
- IEEE 802.3at compliant.
- Maximum 30W per port.
- Total PoE Budget:
- TGPS-1080-M12: 240 W
- TGPS-1080-M12-24V: 60 W (12–24VDC), 120 W (24–57VDC)
Overload Protection: Present
Reverse Polarity Protection: Not present
Indicators: Dedicated LEDs per port for LNK/ACT, speed (1Gbps or 10/100 Mbps), duplex/collision, and PoE injection.
Limitations:
- No managed Layer 2 features (as it is an unmanaged switch).
- Reverse polarity protection not available.
- Some models differ in PoE capacity and MAC table size.

8. Standards and Compliance
Ethernet Standards: IEEE 802.3 (10Base-T), 802.3u (100Base-TX), 802.3ab (1000Base-T), 802.3x (Flow Control), 802.3at (PoE).
Railway Standards: EN50155, EN50121-3-2, EN55011, EN50121-4.
EMI Compliance: FCC Part 15, CISPR EN55022 Class A.
EMS Immunity: EN61000-4-2 (ESD), EN61000-4-3 (RS), EN61000-4-4 (EFT), EN61000-4-5 (Surge), EN61000-4-6 (CS), EN61000-4-8, EN61000-4-11.
Shock: IEC60068-2-27.
Vibration: IEC60068-2-6.
Free Fall: IEC60068-2-32.
Safety Compliance: EN60950-1.

9. Additional Information
Warranty: 5 years for all models in the TGPS-1080-M12 Series.
Support: ORing provides technical support through support@oring-networking.com and publishes updated documentation online. Firmware or updates are not commonly applicable since this is an unmanaged switch, but installation and safety documentation is periodically revised.
Maintenance: Minimal maintenance required; recommended to periodically inspect connectors for vibration-related loosening, check for cable integrity, and verify LED indicator behavior.
Operational Notes: Designed for use in high-reliability, harsh-environment industrial applications where shock, vibration resistance, and power redundancy are mission-critical. Fully ruggedized with M12 connectivity and secure mechanical construction.

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