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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Coming Soon.

Robustel’s EG5120 is a new generation of industrial edge computing gateway, supporting global 5G/4G/3G/2G networks for cellular backhaul, with a fully-fledged Debian 11(bullseye) based operating system able to support thousands of existing or new ARMv8 (Raspberry Pi compatible) based applications.

EG5120 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 quad core 1.6 GHz Cortex A53 CPU and an integrated NPU of 2.3 TOPS that greatly accelerate machine learning inference, EG5120 will take the compute power to the next level, best for the edge computing and edge AI applications, can also be used as a combination of cellular router + embedded PC in all the industrial filed.

RCMS is Robustel’s free router monitoring service that is fully compatible with the EG5120. It allows customers to see a location overview of their routers quickly and simply on a map plus features such as data usage, signal strength, current network and much more can then be viewed on a per router/gateway 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 5G/4G/3G/2G cellular connectivity with global band coverage
  • High performance compute engine with 1.6 GHz CPU + 16 GB eMMC Flash for running complex applications
  • ‘Docker’ containerisation supported
  • Cutting-edge (Release 16) 5G interface
  • 802.11ac Wi-Fi (optional) supporting AP and Client modes
  • Bluetooth (optional), Bluetooth 5.3 compliant
  • 2 x RS232/RS485 (software configurable) ports for connection to industrial/legacy devices
  • 2 x DI & 2 x DO for simple monitoring and control
  • Dual SIM card slots for redundant communications
  • Wide Operating Temperature range for industrial applications
  • Full Modbus TCP and Modbus RTU support including MQTT transfer to mainstream cloud platforms
  • 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 Quad core Cortex-A53, 1.6 GHz
Flash 16 GB eMMC


Cellular Interface    
Version 4G 5G
Number of antennas 2 4
Connector SMA-K
SIM 2 x Mini SIM (2FF)


GNSS Interface (Optional)    
Version 4G 5G
Number of antennas


Optional, requires a 4-in-1 Combo Antenna to support
Connector SMA-K
Technology GPS/GLONASS/BeiDou (Compass) /Galileo/QZSS


Serial Interface  
Type 2 x RS232/RS485 (software configurable)

6-pin 3.5 mm terminal block with lock

3-pin, RS485: 3-pin

ESD protection ±8 KV
Baud rate 300 bps to 115200 bps
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)
Isolation Bi-directional optocoupler (DI), Single directional optocoupler (DO)
Absolute maximum VDC + 30V DC
Absolute maximum ADC 100 mA
Signal definition DI1+, DI1-, DI2+, DI2-, DO1+, DO1-, DO2+, DO2-


Wi-Fi Interface (Optional)
Number of antennas 2
Connector RP- SMA-K
Standards 802.11a/b/g/n/ac, 2 x 2 MIMO, supports AP and Client modes

Frequency bands


2.412 – 2.484 GHz (2.4 GHz ISM band)

4.915 – 5.925 GHz (5 GHz ISM band)


WEP 64-bit and 128-bit encryption with H/W TKIP processing

WPA/WPA2 (Wi-Fi Protected Access)

AES-CCMP hardware implementation as part of 802.11i security standard

Data rate


802.11n: up to 300 Mbps – 2 x 2 MIMO

802.11ac: up to 866.7 Mbps (80 MHz channel)


Bluetooth Interface (Optional)
Number of antennas 1 (Multiplexing WiFi antenna)
Connector RP-SMA-K
Standards Bluetooth 2.1 and 3.0 + Enhanced Data Rate (EDR) + Bluetooth 5.3


Ethernet Interface  
Number of ports 2 x 10/100 Mbps, LAN or WAN
Magnet isolation protection 1 KV


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 Signal
Watchdog External


Software (Basic features of RobustOS Pro)
Network protocols PPP, PPPoE, TCP, UDP, DHCP, ICMP, NAT, HTTP, DNS, NTP, SMTP, Telnet, VLAN, HTTPs, DNS, ARP, NTP, SMTP, Telnet, VLAN, SSH2, DDNS, etc.
VPN tunnel IPsec, OpenVPN, GRE
Firewall DMZ, anti-DoS, 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 14 GB
RAM available for SDK 1.5 GB


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 ~ 60V DC
Power consumption

Idle: 5W

Data link: 20W (peak)


Physical Characteristics
Ingress protection IP30
Housing & Weight Metal, 567 g
Dimensions 49 x 105 x 128 mm
Installations Desktop, wall mounting and 35 mm DIN rail mounting
Operating temperature -40 ~ +70 °C
Storage temperature -40 ~ +85 °C
Relative humidity 5 ~ 95% RH


Regulatory and Type Approvals (*In progress)
Environmental RoHS2.0*


Model PN WiFi + BLE Cellular Frequency Bands* Certification
(*In progress)
EG5120-A2AAZ-4L-A06GL B090702 4G: LTE FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/
B20/B25/B26/B28LTE TDD: B34/B38/B39/B40/B413G: WCDMA: B1/B2/B4/B5/B6/B8/B19

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



EG5120-A2CAZ-4L-A06GL B090704
EG5120-A2AAZ-5G-A25GL B090701 5G: NR SA/NSA: n1/n2/n3/n5/n7/n8/n12/n13/n14/n20/n25/

4G: LTE FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B17/B18/
B19/B20/B25/B26/B28/B29/B30/B32/B66/B71LTE TDD: B34/B38/B39/B40/B41/B42/B43/B48LAA: B46 (only supports 2 x 2 MIMO)

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

EG5120-A2CAZ-5G-A25GL B090703
EG5120-A2ZAZ-NU B090705  

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