TR321-M Industrial LTE CAT-M1 & NB-IoT Cellular Router 2-LAN
Review: 5 - "A masterpiece of literature" by , written on May 4, 20020

TR321-M Industrial LTE CAT-M1 & NB-IoT Cellular Router 2-LAN

Available:Accepting Orders

TR321-M Industrial LTE CAT-M1 & NB-IoT Cellular Router 2-LAN

TR321-MS7E: Industrial LTE CAT M1/NB1 Modem: FDD-LTE B3/B8/B20/B28, GPRS/EDGE 900/1800Mhz

SIMCOM SIM7000E, Certified by Telstra, AU RCM Certification

TR321 Series Router is a compact industrial LTE CAT-M1 & NB-IoT cellular router, which adopts high-powered industrial 32-bits CPU, with multi-layer software detection and hardware protection mechanism to ensure reliability and stability of the device.


  • OPEN WRT, support multiple developments
  • 1x WAN (can be configured as LAN), 1x LAN(10/100M), 1x RS232, 1x RS485 (option)
  • LTE-M/PPPoE/DHCP and Static address connection mode, switchover between wired and wireless connectivity
  • Support MQTT protocol
  • APN/VPDN to ensure the security of data transmission.
  • Multiple VPN protocols, IPSec, L2TP, PPTP, GRE (option) and OPEN VPN.
  • DHCP server, DHCP binding MAC address, Dynamic DNS (DDNS), Firewall, NAT, DMZ host, QoS, Traffic Analysis, Real-time display of data transfer rate, etc.
  • TCP/IP, UDP, FTP, HTTP network protocols.
  • SPI Firewall, DoS attack, VPN traversal, Access Control, Port Mapping, DMZ Mapping, Access Control List (ACL), IP-MAC binding and Clone function, etc.
  • Heartbeat link detection, offline automatic reconnection.
  • Hardware and software auto inspection technology, enable operation fault auto repairing.
  • Status query of system, network connection, routing.
  • Telnet, web, ssh configurations.
  • Web upgrade, local system log, remote log, serial port output log.
  • WIFI (option) or GPS (option)
  • Remote configuration and management

TR321 Series Router enables users to quickly access the Internet, to ensure secure and reliable data transmission. It’s ideal for IOT (Internet of Things) and M2M (Machine to Machine) applications, and has been widely used in many applications, such as Intelligent Transportation, Smart Grid, Oil and Gas, ATM, Vending Machine, Agricultural Irrigation, Environmental Protection, Industrial Automation, Energy Saving, Smart Home, etc.


CPU: Industrial 32-bit
FLASH: 16MB(Extendable to 32MB)
SDRAM: 128MB(Extendable to 256MB)
Cellular Interface
Note: CAT NB1, EDGE/GPRS are unavailable on TR321-MS7A
Cellular Antenna Interface
Number of Ports: 1
Note: Standard SMA female antenna interface, characteristic impedance 50Ω
SIM Interface
Number of Ports: 1
Note: Standard drawer type card holder, support 1.8V/3V
SIM/UIM card, built-in 15KV ESD protection
Ethernet Port(RJ45)
Number of Ports: 2, 1x WAN(Can be configured as LAN), 1x LAN
Note: 10/100M, Auto MDI/MDIX, 1.5KV magnetic isolation protection
WIFI (Option)
Standard: IEEE802.11b/g/n for wireless LAN
Transmission Rates: 
IEEE802.11b/g: Up to 54Mbps, IEEE802.11n: Up to 300Mbps
Security: WEP, WPA/WPA2
TX Transmit Power: 18dBm(11g), 21dBm(11b)
RX Sensitivity: <-72dBm@54Mpbs
GPS (Option)
Support from the built-in cellular module
Note: GPS may be unavailable for some cellular modules.
Serial Interface (5-PIN Industrial terminal block)
Number of interfaces: 2, 1x RS232, 1x RS485(Option)
Note: Built-in 15KV ESD protection, and TTL GPIOs is customizable
Serial Communication Parameters
Baudrate: 300~230400bits/s
Data Bit: 5, 6, 7, 8 bits
Stop Bit: 1, 1.5, 2 bits
Check: No, Even-parity, Odd Parity, SPACE and MARK
Power Requirements
Standard Power: DC 12V/1.5A
Power Range: DC 5~35V
Note: Built-in power inverting protection and over voltage protection
Power Consumption
Communication: 123~250mA@12VDC
Standby: 110~200mA@12VDC
Scheduled Shutdown: 2mA@12VDC
LED Indicators
Power, Signal Strength, System, Online, Alarm, WAN and LAN
EMC up to level 3
Use NTP technology, build-in RTC
SIM/UIM card port built-in 15KV ESD protection
Warranty Period: 12 months
Environmental Limits
Operating Temperature: -35~+75ºC(-31~+167 ºF)
Storage Temperature: -40~+80ºC(-40~+176 ºF)
Ambient Relative Humidity: 93%±3%, non-condensing
Physical Characteristics
Protection Class: IP30, Housing and system are isolated safely, ideal for industrial automation application
Housing: Iron
Weight: 320g(0.71lbs), router host only, accessories not included.
Dimension: 100x100x23mm(3.94x3.94x0.91 inches), Antenna and other accessories not included


    Environmental Limits
    Operating Temperature: -35~+75ºC(-31~+167 ºF) Storage Temperature: -40~+80ºC(-40~+176 ºF)
    Ambient Relative Humidity: 93%±3%, non-condensing
    Power Consumption
    Standby 110~200mA@12VDC
    Communication 123~250mA@12VDC
    Scheduled Shutdown 2mA@12VDC
    Type Level Voltage/Current Waveform Value
    Power Frequency Magnetic Field 3 Continuous sine wave 30A/m
    Damped Oscillatory Magnetic Field 3 Continuous sine wave 30A/m
    Pulse Magnetic Field 3 Pulse 100A/m
    Radiated Electromagnetic Field 3 80MHz~1000MHz Continuous-wave 10V/m
    Level 3, suitable for equipment installed in a typical industrial environment: Plant, Power Plant, or residence area.
    Protection Class
    IP30, Housing, and system are isolated safely, ideal for industrial automation application
    MTBF(mean time between failures): >10,000hrs
    Ultra-low consumption design includes sleep mode, scheduled online and offline mode
    EMC up to level 3
    Use NTP technology, built-in RTC
    SIM/UIM card port built-in 15KV ESD protection
    Physical Characteristics
    Housing Metal, IP30
    Dimensions 100x100x23mm(3.94x3.94x0.91 inches), Antenna and other accessories not included
    Weight 320g(0.71lbs)


    Package Checklist
    1. TR321 Router Host
    2. Power Adapter(DC 12V/1.5A)
    3. Cellular Antenna (Male SMA)
    4. Console Cable(RS232)
    5. Ethernet Cable(1 meter)
    6. 5-Pin Terminal Block



      Note: This Router has all certifications including RCM AU certification.