Retro Connect

Connect to industrial legacy devices with 1 x RS232, 1 x RS485

Dual SIM Link

Dual SIM slots for the ultimate in industrial redundancy.

Application Support

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

Cat 1 Coverage

Highly stable 4G Cat 1 network connectivity

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Energy & Utilities

Robustel’s EG5101 is a new industrial edge computing gateway, supporting 4G Cat 1 network for cellular backhaul, with a fully-fledged Debian 11(bullseye) based operating system able to support thousands of existing or new ARMv7 (Raspberry Pi compatible) based applications.

EG5101 supports Docker for easy deployment of applications and benefits from ‘RobustOS Pro’ – Robustel’s latest router OS with enhanced cybersecurity, advanced GUI and a myriad of software features including VPNs, Smart Roaming, SMS remote control and more. With a 792 MHz i.MX 6ULL CPU, EG5101 can be used as a combination of cellular router + embedded PC for IoT applications.

RCMS is Robustel’s free router monitoring service that is fully compatible with the EG5101. It allows customers 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:


  • Highly stable 4G Cat 1 network connectivity
  • High performance compute engine with 8 GB eMMCFlash for running complex customer applications
  • Docker’containerization supported
  • 1 x RS232, 1 x RS485 for connection to industrial legacy devices
  • Dual SIM card slots for redundant communications
  • Wide Operating Temperature range for industrial applications
  • Supports C, C++, Java, Python, Node.js etc. for users to develop their own applications
  • More than 50,000 applications from Debian repository currently available
  • Wireguard/IPsec/OpenVPN/GRE/L2TP/PPTP/DMVPN+ more VPN options
  • Supports RCMS – Robustel’s router/gateway management platform for effective management of large estates of devices
Hardware System
CPU i.MX 6ULL, 792 MHz
Flash 8 GB eMMC


Cellular Interface
Number of antennas 1
Connector SMA-K
SIM 2 x Mini SIM (2FF)


Ethernet  Interface 
Ports 1 xRJ45, 10/100 Mbps
Magnet Isolation Protection 1 KV


Serial Interface
Type 1 x RS232, 1 x RS485
Connector 6-pin 3.5 mm terminal block with lock
ESD protection 8 KV Air, 4 KV Contact
Baud rate 300 bps to 115200 bps
Signal RS232: TXD, RXD, GND RS485: Data+ (A), Data- (B), GND


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


Software (Basic features of RobustOS Pro)
Network protocols PPP, PPPoE, TCP, UDP, DHCP, ICMP, NAT, HTTP, DNS, NTP, SMTP, Telnet, HTTPs, DNS, ARP, SSH2, DDNS, etc.
VPN tunnel IPsec, OpenVPN, GRE
Firewall DMZ, anti-DDoS, Filtering (IP/Domain name/MAC address), Port Mapping, Access Control
Remote management Web, CLI, SMS
Serial port Transparent, TCP Client/Server, UDP, Modbus RTU Gateway
Others 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)
Debian repository available
Flash available for SDK 6 GB
RAM available for SDK 256 MB / 768 MB


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


Power Supply and Consumption
Connector 2-pin 3.5 mm terminal block with lock
Input voltage 9 ~ 36V DC
Power consumption Idle: 56mA @ 12V
Data link: 431mA(peak) @ 12V


Physical Characteristics
Ingress protection IP30
Housing & Weight Aluminum, 374g
Dimensions 134.8. x 105 x 32 mm
Installations Desktop, wall mounting and 35 mm DIN rail mounting
Operating temperature -20 ~ +70 °C
Storage temperature -20 ~ +85 °C
Relative humidity 5 ~ 95% RH


Regulatory and Type Approvals (*In progress)
Environmental RoHS2.0*
EMI EN 55032 Conducted Emission class B
EN 55032 Radiated Emission class B

IEC 61000-4-2(ESD) Contact Level 2, Air Level 3


IEC 61000-4-3 (RS) Level 2
IEC 61000-4-4(EFT) Level 2
IEC 61000-4-5 (Surge) Level 2
IEC 61000-4-6(CS) Level 2
IEC 61000-4-8 Level2


Model PN Cellular RAM Enclosure Frequency Bands* Country/Region Certification
(*In progress)
EEG5101-A4E-A31EU B130001 4G 512MB DDR3









EG5101-B-4E-A31EU B130002 4G 1GB DDR3
EG5101P-A-4E-A31EU B130003 4G 512MB DDR3

4G: LTE FDD: B1/B3/B5/B8

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

3G: WCDMA: B1/B5/B8

2G: GSM: B3/B8






EG5101P-B-4E-A31EU B130004 4G 1GB DDR3

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