The ruggedized vibration-proof LTE WLAN router WR322A-M12 Series is designed for vehicle and railway with dual-radio high-speed LTE routing and WLAN networks. The RS232/422/485 serial port with Modbus support brings sensor and meter data to cloud wirelessly. The LTE to WLAN redundancy and LTE/WLAN auto offload design guarantees continuous connections. To safeguard cybersecurity, security features such as Firewall, OpenVPN, GRE tunnel are supported. The embedded MQTT and RESTful API enables instant public cloud integration such as AWS or Azure. The private cloud platform ThingsMaster and ThingsMaster OTA can also be set up for an instant and secured access to receive data or manage devices remotely.
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High-speed 4G LTE & Wi-Fi Network
•LTE Cat.4, 2x2 MIMO, 150M downlink and 50M uplink
•LTE Cat.6 with 2CA, 2T2R MIMO provides 300M downlink and 50M uplink
•4G/3G/2G full cellular network compatibility
•LTE Global Band
LTE: FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28
LTE: TDD B38/B39/B40/B41
WCDMA: FDD B1/B2/B4/B5/B6/B8/B19
GSM: B2/B3/B5/B8
•Support GPS for location services
•IEEE 802.11ac compliant & backward compatible with
•Selectable 5G/2.4G Wi-Fi for local coverage, up to 866Mbps bandwidth
・Optional NBIoT + M1
    LTE FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/
    LTE TDD: B39 (For Cat M1 Only)

Serial Communication & High Throughput Data Switching
・1 port RS232/422/485 full functions for
    serial over LTE/Wi-Fi/Ethernet data switching
・2-port Gigabit Ethernet supports routing and bridging
・Close to wire-speed NAT routing performance
・Hardware NAT for CPU utilization saving

Dynamic Routing with Redundancy Protection
・RIPv1&v2, OSPFv1&v2 for intra-domain routing within
   an autonomous system
・Efficient unicast/multicast* static routing
・VRRP guarantees sustainable routing in a single point
   of failure

Rugged Design for Wayside Surveillance, ITS Application 
・Up to 150Mbps LTE network bandwidth with EN50121-4 for Industrial IoT, ITS, Railway track side application
・Effective heat dissipation design for operating in -40~70oC environments
・Railway EMC: EN50121-4 compliance
・CE Marking
・IEC61000-6-2/IEC61000-6-4 heavy industrial
Enhanced Cyber Security & Redundancy
・Firewall for inbound/outbound traffic
・OpenVPN (server/client), IPsec for secure remote
    connection (not available for EurAsEC countries)
・GRE tunnel
・HTTPs/SSH secure login
・TACACS+ multi-user authentication for privileged
    user management
・Cellular to WAN redundancy, dual SIM backup
・Cellular to WLAN auto offload
・RSTP spanning tree protocol

Industrial IoT LAN & Cloud Management
・Embedded Amazon AWS & Microsoft Azure cloud service
・Various configuration paths, including CGI WebGUI, 
     CLI, SNMP and RMON*
・1:1 NAT, port forwarding and NAPT for local traffic
・ARP response over 802.2 LLC SNAP
・Support SNMPv3 and entity-MIB (RFC4133), MIB II
・NTP v3 time management
・WoMaster Software Utilities
    -NetMaster: Network Management System with VLAN visualization* and ERPS* Ring
    -ViewMaster: Configuration Management
    -ThingMaster: Interactive monitoring dashboard to collect data from field devices
    -ThingMaster OTA: Realtime map showing the status, signal strength, location of the remote devices, over-the-air batch device registration, configuration and firmware upgrade*, alerts on critical events to prevent downtime
・Support MQTT protocol, ready to use AWS/Azure and Private Cloud Agent for cloud management
・LLDP* for topology control, auto-topology drawing
・USB for easy field configuration and firmware update
・ Diagnostic tool includes Ping, TFTP, SNMP Trap, E-mail Alert and System Log


Standard 3GPP Release 11/12 Long Term Evolution (LTE), fallback 3GPP Release 7,8,9 for HSPA/UMTS
IEEE 802.11ac wireless local area network (WLAN), Backward support 802.11n/g/a/b Wireless LAN
IEEE 802.3 10Base-T Ethernet
IEEE 802.3u 100Base-TX Fast Ethernet
IEEE 802.3ab 1000Base-T Gigabit Ethernet copper
IEEE 802.1D-2004 Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1Q for VLAN
Ethernet Port

2 x 10/100/1000MBase-T M12 A-code, Auto-Negotiation, Auto-MDI/MDIX (X-code by request)
Pin Definition:
8 pin A-Code Female
1000 Base-T: 4-pair Cat.5E/Cat.6 FTP/STP cable, EIA/TIA 568B 100Ohm, 100Meters
*Recommended uses FTP/STP cable for the railway on-board application

System LED

1 x PWR: Green On
1 x SYS: Ready: Green On, Firmware Updating: Green Blinking
1 x DO: Red On
2 x Ethernet Ports: Link: Green On, Activity: Green Blinking
1 x Serial Ports : Activity: Green Blinking
1 x DI: Green On
3 x Radio (Ra, Rb, Rc): Radio status
Ra: SIM detected: Green On, SIM not inserted: Off
Rb: 2/3G connection: Green On, Not 2/3G connection: Off
Rc: 4G connection: Green On, Not 4G connection: Off
6 x Radio (Ra, Rb, Rc, Rd, Re, Rf): Radio status
Ra: AP mode: Green On, Station mode connected: Green Blinking, Station mode/radio disable: Off
Rb/Rc: Reserved
Rd: SIM detected: Green On, SIM not inserted: Off
Re: 4G connection: Green On, 2/3G connection: Green Blinking, disconnected: Off
Rf: Base station connected: Green On for 2 sec period, Base station disconnected: Green Off for 2 sec period


System Reset(2~6 Seconds) / Default Settings Reset(over 7 Seconds)

SMA Socket WR312A-M12-LTE:
2x SMA-Female:   ANT1 for LTE Main, ANT2 for LTE Aux/GPS 
2x RP-SMA: ANT1 for Wi-Fi1, ANT2 for Wi-Fi2
2x RP-SMA: ANT1 for Wi-Fi1, ANT2 for Wi-Fi2,
3x SMA-Female: ANT3 for LTE Main, ANT4 for GPS, ANT5 for LTE Aux
SIM Socket 2 x Nano SIM with redundancy
Digital Input/ Digital Output 6-Pin Removable Terminal Block Connector:
   4 Pins for 2x DI with isolation
     High: DC 2~30V
     Low: DC 0~1V
   2 Pins for 1x DO: 0.1A/24V with isolation
Serial 1 x RS232/422/485, DB9 female
Power Input

M12 4 pin D-Code Male with polarity reverse protection

 Cellular Properties                  (LTE Cat.6)
Standard UMTS/HSPA 3GPP Release 8
LTE 3GPP Release 12 (LTE Cat.6)
Data Rate TD-SCDMA: DL Max. 4.2 Mbps, UL: Max.2.2 Mbps
HSPA: DL: Max. 42 Mbps, UL: Max. 5.76 Mbps
WCDMA: DL: Max 384 Kbps, UL: Max 384 Kbps
LTE-FDD: DL: Max. 300 Mbps, UL: Max. 50 Mbps, 2x2 DL MIMO
LTE-TDD: DL: Max. 226 Mbps, UL: Max. 28 Mbps, 2x2 DL MIMO
Band Information: LTE-E

LTE-FDD: B1/B3/B5/B7/B8/B20/B28

LTE-TDD: B38/B40/B41

WCDMA: B1/B3/B5/B8

 Cellular Properties                 (LTE Cat.4)
Standard GSM/GPRS/EDGE 3GPP Pelease 6
UMTS/HSPA 3GPP Release 8
LTE 3GPP Release 11
Data Rate GPRS: DL: max. 85.6 kbps, UL: max.85.6 kbps
EDGE: DL: max. 236.8 kbps, UL: max. 236.8 kbps
HSPA: DL: max. 42 Mbps, UL: max. 5.76 Mbps
LTE-FDD Cat.4: DL: max. 150 Mbps, UL: max. 50 Mbps, 2x2 DL MIMO
LTE-TDD Cat.4: DL: max. 130 Mbps, UL: max. 35 Mbps, 2x2 DL MIMO
Band Information: LTE-E

LTE: FDD B1/B3/B7/B8/B20/B28A

LTE: TDD B38/B40/B41

GSM: B3/B8

Band Information: LTE-G LTE: FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28
LTE: TDD B38/B39/B40/B41
WCDMA: FDD B1/B2/B4/B5/B6/B8/B19
GSM: B2/B3/B5/B8
 Wi-Fi Properties
Standard IEEE 802.11ac/a/b/g/n, 2T2R MINO
802.11ac: OFDM (BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM)
Data Rate 802.11ac: MCS0~9, max. 866Mbps
802.11b: 11Mbps / 802.11a/g: 54Mbps / 802.11n: MCS0~15, max.300Mbps
Check detail TX/RX information in User Manual
Frequency ISM Band, 2.412GHz~2.472GHz, 5.180MHz~5.825MHz(Band 1,4)
≦20db/≦23db, compliant with CE 2.4G/5G request
 GPS Properties 
Performance Cold start: 18s, Warm start: 2.2s, Hot start: 1.8s
Sensitivity Cold start: -146dBm, Reacquisition: -157dBm, Tracking: -157dBm
Accuracy < 1.5M
GNSS Frequency GPS/Galileo: 1575.42±1.023 MHz
GLONASS: 1597.5~1605.8 MHz
BeiDou: 1561.098±2.046 MHz
Antenna Frequency range: 1561~1615MHz
Polarization: RHCP or linear
VSWR: <2 (Typ.)
Passive antenna gain: >0dBi
Management Interface CGI WebGUI, Command Line Interface (CLI), IPv4/IPv6*, Telnet, SNMP v1/v2c/v3, DDNS, DHCP server/client, DHCP Relay, TFTP, System Log, SMTP, ARP response over 802.2 LLC SNAP, Proxy ARP, DNS (client/proxy), PPPOE*


User Management  Radius client, TACACS+, local database
Serial communication TCP Server/TCP Cleint/UDP mode, TCP Alive check, Force TX Delimiter.Timeout/interval/length, Long Distance Termination
Time Management

NTP, SNTP, Cellular Time

IoT AWS Agent, Azure Agent, ThingMaster Agent
Network Management IPv4, SNMP v1/v2c/v3/Trap, MIB II, Entity MIB, DHCP server/client, DHCP relay*, TFTP, ARP response over 802.2 LLC SNAP, Proxy ARP, DNS (client/proxy)
Traffic Management

Flow Control*, Traffic shaping

WAN / Routing / NAT/

Firewall / VPN

Routing: RIPv2, OSPFv2, VRRPv2
 NAT: 1-1 NAT, NAPT(SNAT/DNAT), Port Forwarding, DMZ
 Firewall: Stateful Inspection firewall, IP/Port Filter
 VPN: IPSec, OpenVPN (Multipoint VPN), L2TP, GRE, PPTP, MGRE*

IEEE 802.1X/RADIUS, TLS v1.2, HTTPs/SSH, First login password management

WLAN AP Security: Share Key, WPA/WPA2-PSK(Pre-Shared Key), WPA/WPA2 Enterprise

Encryption: 64/128-bit WEP(Wired Equivalent Privacy), TKIP(WPA-PSK), AES(WPA2-PSK), MAC Filter

Advanced Security

TACACS+, Multi-user authentication

Redundancy Protocol

WAN/LTE Redundancy, Rapid Spanning Tree Protocol (RSTP)

IIoT Industrial Protocol


Private Cloud

ThingsMaster, ThingsMaster OTA

Public Cloud

AWS Agent, Azure Agent


Google map, Baidu map


MIB-II, Entity MIB, WoMaster Private MIB

Utility ViewMaster, NetMaster, Ping, Traceroute, IP SLA*

Serial communication

TCP Server/TCP Client/UDP mode, TCP Alive check, Force TX Delimiter/Timeout/interval/length, Long Distance Termination 

Cellular Configuration

Radio on/off, 2G, 3G and 4G modes configurable, SIM Security, Connection Status, Cellular to Eth-WAN Redundancy, GPS positioning (by model), Backup SIM Retry (1-10 times)

WLAN Configuration WLAN Basic Settings: Radio on/off, AP/client mode, 2.4G 11n/5G 11ac Band and Frequency selection, SSID/Multi-SSID configuration, SSID broadcast, VLAN ID,  WLAN to LAN Link fault pass-through*, Cellular to WLAN Auto Offload and advanced WLAN settings, 802.1X
 Power Requirement
Input Voltage 24V(12~48VDC)
Reverse Polarity Protect Yes
Input Current

WR312A-M12-LTE: 0.23A@24V

WR322A-M12-WLAN+LTE: 0.26A@24V

Power Consumption

WR312A-M12-LTE: Max 5.52W@24VDC full traffic, suggest to reserve 15% tolerance

WR322A-M12-WLAN+LTE: Max 6.24W@24VDC full traffic, suggest to reserve 15% tolerance

Installation DIN-Rail
Enclosure Material Steel Metal with Aluminum

50 x 151 x 120 mm(W x H x D) / without DIN Rail Clip

Ingress Protection IP30 / IP40*

WR312A: ~600g without package

WR322A: ~660g without package

Operating Temperature & Humidity -40°C~75°C, 5%~95% Non-Condensing
Storage Temperature -40°C~85°C
MTBF >200,000 hours
Warranty 3 years
Safety EN 62368-1:2014/AC:2017
EMC Railway Roadside EN 50121-1/4, EN61000-6-4
EN61000-4-2 ESD, EN61000-4-3 RS, EN61000-4-4 EFT, EN61000-4-5, EN61000-4-6 CS,
EN61000-4-8 Magnetic Field
EN61000-4-12/16/17/18/29 for power application
CE CE RED Compliance
Safety: EN 62368-1
EN 62311 MPE assessment
EN 301 489-1/17/19/52, EN 55032/55024
EN 300 328/EN 301 893*, EN 301 908-1*
FCC FCC part 15B Class A Compliance, FCC Approved LTE/WLAN Module
Environmental Shock/Vibration: EN 50155:2017/EN 61373:2010 Railway Shock/Vibration
Shock: IEC60068-2-27 Compliance
Free fall: IEC60068-2-31 Compliance
Vibration: IEC 60068-2-6 Compliance
  • Built-in Microsoft Azure and Amazon AWS agent
  • Secured Remote Access by VPN
WR322A-M12 can act as a VPN server for data encryption and dynamic remote access. Multiple VPN protocols are supported such as IPSec, OpenVPN, GRE, and L2TP.  The channels between multiple networks, ex. private/public/hybrid networks are fully secured and with authentication features.
  • Cyber Security Guard
A stateful firewall monitor is in place to monitor the state of the connection at all times. Multiple industrial Fieldbus protocols, ex. Modbus TCP, EtherNet/IP are also supported for factory automation applications.

  • ​Secure IoT Modbus Tags
  1. Tag-based data acquisition with MQTT support
  2. MQTT client acting as publisher and subscriber
  3. The latest TLS encryption and X.509 authentication
  4. Selectable serial port and data type. Sensor alive check and display sensor value
  • GPS/BDS/GLONASS/Galileo Positioning
GPS Glonass BDS Galileo
  • Secured Multiple Sites Management 
- N to N VPN
- Latest TLS encryption and X.509 authentication
  • ThingsMaster OTA (device management over the air) 
The OTA agent embedded in WR322A-M12 upgrades device management over the air, anywhere you are and any time you want over your mobile devices.  ThingsMaster OTA is a secured local OTA software that can be installed in private or public service or even QNAP NAS (network-attached storage). With OTA, all device information such as location, warning event can be shown in real-time.  The maintenance such as configuration reload or device reboot can also be run by the group.
OTA Device Management
Model Name Description
WR302A-M12 Industrial Secure M12 IIoT Router, 2GbE+1COM, 2DI+1DO
WR312A-M12-WLAN Industrial Secure M12 Wireless IIoT Router, 2GbE+1COM, 2DI+1DO, 802.11ac/n WLAN
WR312A-M12-LTE-E Industrial Secure M12 Cellular IIoT Router, 2GbE+1COM, 2DI+1DO, LTE-E, 2SIM, FDD B1/3/7/8/20/28A, TDD B38/40/41
WR312A-M12-LTE-G Industrial Secure M12 Cellular IIoT Router, 2GbE+1COM, 2DI+1DO, LTE-G, 2SIM, LTE FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28, LTE TDD B38/B39/B40/B41
WR312A-M12-LTE6-E Industrial Secure M12 Cellular IIoT Router, 2GbE+1COM, 2DI+1DO, LTE-E Cat.6, 2SIM, FDD B1/3/5/7/8/20/28/32, TDD B38/40/41
WR322A-M12-WLAN+LTE-E Industrial Secure M12 Cellular IIoT Router, 2GbE+1COM, 2DI+1DO, 802.11ac/n WLAN, LTE-E, GPS, 2SIM, FDD B1/3/7/8/20/28A, TDD B38/40/41
WR322A-M12-WLAN+LTE-G Industrial Secure M12 Cellular IIoT Router, 2GbE+1COM, 2DI+1DO, 802.11ac/n WLAN, LTE-G, GPS, 2SIM, LTE FDD B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28, LTE TDD B38/B39/B40/B41
WR322A-M12-WLAN+LTE6-E Industrial Secure M12 Cellular IIoT Router, 2GbE+1COM, 2DI+1DO, 802.11ac/n WLAN, LTE-E Cat.6, GPS, 2SIM, FDD B1/3/5/7/8/20/28/32, TDD B38/40/41
Package List 1 x Product Unit
1 x 6-pin Removable Terminal Connector
1 x Quick Installation Guide
1 x Attached Din Clip
Default Enclosed Antennas:
WR312A-M12-LTE: 2 x LTE Antennas, Black
WR312A-M12-WLAN: 2 x Wi-Fi Antennas, White
WR322A-M12-WLAN+LTE: 2 x LTE Antennas, Black +  2 x Wi-Fi Antennas, White
  • WR322A-M12 supports dual SIM redundant. The SIM1 and SIM2 connect to different operators for communication backup. When the signal of SIM1 is weak, it will automatically change to SIM2, to provide uninterrupted data communication.
  • High-Speed 4G LTE / Wi-Fi for data transmission.
  • RS232/422/485 9-pin full serial functions for connecting onboard information board and smoke sensors.
  • OpenVPN, IPsec for secure connectivity, and USB for easy field configuration. 
  • GPS signal for train position tracking.
 WoMaster's industrial secured and rugged LTE router for IIoT WR302G, WR312G, WR322G Series
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