Dual RS232

Connect multiple industrial devices with dual RS232 connectivity.

Dual SIM Link

Dual SIM slots for the ultimate in industrial redundancy.

Application Support

More than 50,000 applications from Debian repository currently available.

Global Band Coverage

Supporting global 4G/3G/2G networks for cellular backhaul.

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LG5100 uses RobustOS Pro IoT gateway operating system. RobustOS Pro is developed by Robustel based on Debian 11 (bullseye), a common Linux operating system, more convenient for customers to develop edge computing applications by themselves according to their needs, supporting programming languages such as C, C++, Python, Java, Node.js etc., and the latest common APPs can be downloaded in RCMS to fully meet the needs of fragmented IoT applications.

LG5100 supports Docker for easy deployment of applications and benefits from ‘RobustOS Pro’ – enhanced cybersecurity, advanced GUI and a myriad of software features including VPNs, Smart Roaming, SMS remote control and more.

RCMS is Robustel’s free router monitoring service that is fully compatible with the LG5100. It allows customer to see a location overview of their routers quickly and simply on a map. Features such as data usage, signal strength, current network and much more can then be viewed on a per router basis. Over-the-air updates are supported for Firmware, router configuration and Apps serving as essential “insurance” if anything was not quite right during deployment. You can try Robustel’s free router management platform by signing up here:



  • Supports global LoRaWAN frequency bands
  • Compatible with LoRaWAN and private protocols
  • ‘Docker’ containerisation supported
  • Supports embedded LoRaWAN network server
  • Up to 8 channels supports receive data simultaneously
  • Supports Packet Forwarder Version 2.2.1 and Packet Forwarder Protocol Version 1
  • Rich interfaces with 2x RS232/ RS485(software configurable), 2 x DI, 2 x DO
  • Dual SIM card back-up for redundancy, with embedded 4G wireless communication module
  • Cellular WAN, Ethernet WAN, link backup and ICMP detection
  • RobustOS Pro + SDK + Apps
  • Robust industrial design (9 to 60V DC input voltage, support desktop, wall mounting or rail mounting)
  • Supports RCMS – Robustel’s router/gateway management platform for effective management of large estates of devices
Hardware System  
CPU ARM Cortex-A7, 792MHz
Flash 8GB eMMC


Cellular Interface    
Number of antennas 2  
Connector SMA-K
SIM 2 x Mini SIM (2FF)


Ethernet Interface
Ports 2 x 10/100 Mbps, LAN or WAN
WAN port Support 802.3af PD feature on ETH0
Magnet isolation protection 1 KV


LoRa Interface  
Number of antennas 1
Connector SMA-K
Frequency *(In progress) EU868   AU915    CN470   EU433*   US915*    RU864*    IN865*    KR920*   AS923*
Max transmitted power +25 dBm
Max sensitivity -140 dBm
Channel Capacity Supports up to 8 channels receive data simultaneously


Serial Interface  
Type 2 x RS232/ RS485 (software configurable)
Connector 6-pin 3.5 mm terminal block with lock
ESD protection 8 KV air, 4KV contact
Baud rate 300bps to 115200bps
Signal RS232: TXD, RXD, GND    RS485: Data+ (A), Data- (B), GND


DI/DO Interface  
Number of ports 2 x DI + 2 x DO, wet contact
Connector 8-pin 3.5 mm terminal block with lock (DI/DO)
Absolute maximum VDC + 30V DC
Absolute maximum ADC 100mA
Signal DI1+, DI1-, DI2+, DI2-, DO1+, DO1-, DO2+, DO2-


Reset button 1 x RST
USB 1x USB 2.0 (host), Type A, 5V 500mA
LED indicators 1 x RUN, 1 x MDM, 1 x USR, 1 x Signal
Watchdog External


Software (Basic features of RobustOS Pro)
LoRaWAN protocols V1.0.4 Class A/Class  B/Class C

Network protocols


VPN tunnel IPsec, OpenVPN, GRE
Firewall DMZ, anti-DoS, Filtering (IP/Domain name/MAC address), Port Mapping, Access Control
Management Web, CLI, SMS
Serial port

Transparent, TCP Client/Server, UDP,

Modbus RTU Gateway

Other Smart Reboot, Data Guard, Smart Roaming


Operating System RobustOS Pro (Based on Debian 11 bullseye)
Supported programming language C, C++, Python, Java,Node.js etc.(for users to develop own applications)
Flash available for SDK 6GB
RAM available for SDK 256MB


App Center (Available Apps for RobustOS Pro)
Apps* L2TP, PPTP, DMVPN, VRRP, QoS, SNMP, Language, RCMS, Dynamic route, Captive Portal, Modbus Master, etc.
*Request on demand. For more Apps please visit www.robustel.com.


Power Supply and Consumption
Connector 2-pin 3.5 mm terminal block with lock
Input voltage 9 to 60V DC
Power consumption Idle: 180 mA@12 VData link: 1A (peak) @12 V


Physical Characteristics
Ingress protection IP30
Housing & Weight Metal, 555 g
Dimensions 49 x 105 x 128 mm
Installations Desktop, wall mounting and 35 mm DIN rail mounting
Operating temperature -40 to +70 °C
Storage temperature -40 to +85 °C
Relative humidity 5 to 95% RH


Regulatory and Type Approvals *(In progress)
Environmental RoHS2.0*
*See ordering information for details about other certifications
Model PN LoRa Frequency Cellular Frequency Bands* Country/Region
LG5100-AAB-4L-A23CN B092701 470 Mhz 4G: LTE FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28


LTE TDD: B34/B38/B39/B40/B41

3G: WCDMA: B1/B2/B4/B5/B6/B8/B19

2G: GSM: B2/B3/B5/B8

LG5100-BAB-4L-A06GL B092702 868 Mhz EMEA
LG5100-CAB-4L-A06GL B092703 915 Mhz Oceania
LG5100-AAB-NU B092705 470 Mhz China
LG5100-BAB-NU B092706 868 Mhz EMEA
LG5100-CAB-NU B092707 915 Mhz Oceania

*For more information about frequency bands in different countries, please contact your Robustel sales representative.