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1. Product Overview
The TAR-620-M12-MV is an industrial-grade EN50155-compliant cellular and WLAN access point router designed specifically for rolling stock, vehicle, and other rugged industrial wireless applications. Manufactured by ORing Industrial Networking Corp., the device functions as a high‑reliability 3G cellular router with IEEE 802.11a/b/g/n wireless capability and dual Ethernet ports using M12 D‑coded connectors for shock- and vibration-resistant network connections. The product is marketed under model and article number TAR-620-M12-MV, with available regional variants TAR-620-M12-M12-MV_US and TAR-620-M12-MV_EU (US and EU frequency bands). It is part of the ORing Transporter series intended for harsh mobile and railway environments.

2. Key Features
• Full EN50155 compliance for railway and rolling stock environments
• Support for IEEE 802.11a/b/g/n WLAN with link speeds up to 300 Mbps
• Integrated 3G/3.5G HSDPA cellular modem with GSM/GPRS/EDGE/WCDMA/HSUPA/HSDPA support
• Dual 10/100Base‑T(X) Ethernet ports via M12 D‑coding connectors with auto MDI/MDIX
• PoE PD support on ETH2 with 1 kV isolation protection (PoE model)
• Ruggedized enclosure rated IP40 with shock- and vibration-resistant design
• Wide DC power input range from 72–110 VDC (operational range 43–160 VDC) using a 5‑pin 7/8" male connector
• Supports multiple routing modes including Dynamic IP, Static IP, PPPoE, and Cellular modem dial‑up
• VPN support including OpenVPN and PPTP VPN for secure communication
• NAT and firewall features including Virtual Server, Port Trigger, DMZ, UPnP, and configurable IP access tables
• Event warning via Syslog, Email, SNMP Trap, and physical relay output
• Supports HTTPS secure management and 802.1X authentication
• WLAN security including WEP, WPA, WPA2, TKIP, AES, and PSK modes
• DIN‑rail and wall mounting support
• Redundant Ethernet mode with recovery <10 ms
• Extended operating temperature from -25°C to 70°C
• Strong EMC protection including ESD 4 kV, surge resistance, and EN61000‑4 compliance
• Relay output rated 1 A at 24 VDC for alarm signaling
• LED status indicators for power, Ethernet links, WLAN, WAN/cellular, and fault status
• Single SIM card slot for cellular operation
• Designed for continuous operation in high‑vibration and high‑shock environments typical in rail and transit.

3. Technical Specifications
Dimensions:
• 143(W) x 65(D) x 196.1(H) mm (5.62 x 2.55 x 7.72 in)
• Alternate listed size: 145.6(W) x 65(D) x 196(H) mm depending on documentation version
Weight:
• Approx. 1550 g

Enclosure:
• IP-40 rated metal industrial housing

Power Input:
• 72–110 VDC nominal
• Operational tolerance 43–160 VDC
• 5‑pin 7/8" male connector, A‑coding
• Typical power consumption 12 W
• Overload and reverse polarity protection included

Physical Ports:
• 2 x 10/100Base‑T(X) Ethernet ports, M12 D‑coded
• 1 x SIM card slot
• Relay output port rated 1 A at 24 VDC

WLAN Specifications:
• Standard support: IEEE 802.11a/b/g/n
• Modulation: DSSS, OFDM with BPSK, QPSK, 16-QAM, 64-QAM
• Frequency bands:
- FCC: 2.412–2.462 GHz (11 channels), 5.180–5.240 GHz & 5.745–5.825 GHz (9 channels)
- CE/ETSI: 2.412–2.472 GHz (13 channels), 5.180–5.240 GHz (4 channels)
• Data rates:
- 802.11b: 1, 2, 5.5, 11 Mbps
- 802.11a/g: 6–54 Mbps
- 802.11n: up to 300 Mbps
• Transmit power:
- 802.11a: 12 dBm ±1.5 dBm @ 54 Mbps
- 802.11b: 17 dBm ±1.5 dBm @ 11 Mbps
- 802.11g: 16 dBm ±1.5 dBm @ 54 Mbps
- 802.11n HT20: 15 dBm ±1.5 dBm @ MCS7
- 802.11n HT40: 14 dBm ±1.5 dBm @ MCS7
- 802.11an HT20: 12 dBm ±1.5 dBm @ MCS7
- 802.11an HT40: 11 dBm ±1.5 dBm @ MCS7
• Receiver sensitivity:
- 802.11a: -76 dBm ±2 dBm @ 54 Mbps
- 802.11b: -85 dBm ±2 dBm @ 11 Mbps
- 802.11g: -76 dBm ±2 dBm @ 54 Mbps
- 802.11n HT20: -75 dBm ±2 dBm @ MCS7
- 802.11n HT40: -72 dBm ±2 dBm @ MCS7
- 802.11an HT20: -74 dBm ±2 dBm @ MCS7
- 802.11an HT40: -71 dBm ±2 dBm @ MCS7

WLAN Connectors:
• 2 x external reverse-SMA antennas

Cellular Interface:
• 1 x external reverse-SMA antenna connector
• Standards supported: GSM, GPRS, EGPRS, EDGE, WCDMA, HSDPA, HSUPA
• Bands supported:
- Dual-band HSUPA: 1900/2100 MHz
- Quad-band GSM/GPRS/EDGE: 850/900/1800/1900 MHz
- WCDMA/HSDPA: 850/900/1900/2100 MHz

Environmental:
• Operating temperature: -25°C to 70°C
• Storage temperature: -40°C to 85°C
• Operating humidity: 5–95% non-condensing

LED Indicators:
• Power: green
• 2 x Ethernet link/activity LEDs (green)
• WLAN: green
• WAN/cellular: green
• Fault: red

4. Functionality
The TAR-620-M12-MV operates as a combined cellular router and wireless access point, offering secure multi‑mode routing. It supports Dynamic IP routing, Static IP routing, PPPoE authentication, and 3G/HSDPA cellular dial-up. Through its integrated cellular module, it can establish WAN connections in mobile environments without fixed network infrastructure. Its WLAN interface provides client access or backhaul connectivity over 2.4 GHz and 5 GHz. Its Ethernet ports support redundancy with automatic switchover (<10 ms) or switching mode. NAT and firewall rules allow traffic control, port forwarding, DMZ, and UPnP support. VPN capability includes OpenVPN and PPTP for secure tunnels. SNMP, Syslog, email alerts, and relay output provide event notification. It is compatible with US and EU wireless regulatory domains, depending on model version. Applications include railway car Wi-Fi, vehicle telematics, remote monitoring, smart fleet systems, train-to-ground communications, and mobile industrial networking.

5. Components and Accessories
Included items:
• TAR-620-M12-MV main unit
• Two 2.4/5 GHz Wi-Fi antennas (reverse SMA)
• One 3G cellular antenna
• Quick Installation Guide
• Product CD (software, drivers, manuals)

Optional accessories:
• DR-45 series 45 W power supplies
• DR-75 series 75 W power supplies
• DR-120 series 120 W power supplies
• RF Antenna Base series
• WLAN RF antenna series
• RF cable series

6. Installation and Setup
The device supports wall mounting and DIN‑rail installation (depending on accessories). It uses M12 D‑coded connectors for Ethernet to ensure mechanical stability under vibration. Power is supplied through the 5‑pin 7/8" male connector with voltage between 72–110 VDC or within the extended range 43–160 VDC. Setup involves inserting a SIM card in the dedicated slot, connecting WAN/LAN through M12 cables, attaching antennas, and configuring network settings via HTTPS or local web interface. Routing modes include Dynamic/Static IP, PPPoE, and cellular dial‑up. WLAN configurations support multiple SSIDs, security profiles, and band/channel selection. VPN, NAT, SNMP, relay outputs, and IP tables are also configurable.

7. Performance and Capabilities
The device supports WLAN speeds up to 300 Mbps under 802.11n, with robust radio sensitivity for mobile environments. Cellular performance operates across GSM/GPRS/EDGE/WCDMA/HSUPA/HSDPA networks enabling reliable broadband connectivity where wireless infrastructure is available. It provides Ethernet redundancy with recovery times under 10 ms to maintain link stability. Power consumption is low at approximately 12 W, allowing efficient deployment on rolling stock systems. PoE PD availability on Ethernet port 2 provides additional integration flexibility. The extended temperature range and EMC rating ensure stable operation in demanding conditions, including high vibration and shock. Limitations include bandwidth constraints of 3G networks and the IP40 housing (not suitable for environments requiring full IP67/68).

8. Standards and Compliance
The TAR-620-M12-MV conforms to the following standards:
Railway:
• EN50155 (Railway applications electronic equipment)
• EN50121-3-2 (EMI for railway rolling stock)
Mechanical:
• IEC60068-2-6 (vibration)
• IEC60068-2-27 (shock)
• EN61373 (railway shock/vibration)
• IEC60068-2-31 (free fall)
Environmental:
• EN60068-2-1 (cooling)
• EN60068-2-2 (dry heat)
EMC/EMI:
• FCC Part 15 Class A
• CISPR EN55022 Class A
• EN61000-4-2 (ESD)
• EN61000-4-3 (RS)
• EN61000-4-4 (EFT)
• EN61000-4-5 (surge)
• EN61000-4-6 (conducted)
• EN61000-4-8, EN61000-4-11
Safety:
• EN60950-1

9. Additional Information
Warranty:
• Standard 5‑year manufacturer warranty

Support and updates:
• ORing provides firmware updates, software tools, and configuration utilities via CD and online resources
• Technical support: support@oring-networking.com
• Website: www.oring-networking.com

Maintenance:
• Periodic antenna inspection recommended
• Ensure secure M12 connections in high‑vibration environments
• Firmware updates advised for security improvements

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