Robustel LG3120e
Industrial Edge Computing LoRaWAN Gateway with 4G, eSIM, Wi-Fi, Serial and I/O
The Robustel LG3120e is a high-performance industrial LoRaWAN gateway built for sites where connectivity and local intelligence need to arrive together. Running on RobustOS Pro (Debian 11 Bullseye) on a Quad-core ARM Cortex-A53 at 2.0 GHz with 2 GB DDR4 RAM and 6 GB of SDK-available flash, it processes, filters, and acts on field data locally — reducing cloud dependency and the latency that comes with it.
A native LoRaWAN Network Server handles LoRaWAN V1.0.4 Class A and Class C device management on-device across EU868, AU915, US915, and AS923 frequency plans. Pre-installed device profiles and codecs for major LoRa sensor families enable zero-configuration onboarding — attach a supported sensor and it begins reporting without manual decoder setup.
MFF2 eSIM alongside a physical Mini SIM (2FF) slot, dual cellular antennas, and dual-band Wi-Fi 6 (802.11 a/b/g/n/ac/ax, 2.4 GHz and 5 GHz) provide flexible backhaul. TPM 2.0 provides hardware-level key storage and attestation. An onboard RTC retains timekeeping for up to five days after power loss — relevant for remote sites where power interruptions are a known operational condition.
Fleet operations are managed through RCMS: real-time device status, geospatial dashboard, OTA firmware and configuration delivery, and RobustVPN for secure remote access without a site visit.
LNS INTEGRATION
Support for UDP, LoRa Basics™ Station, LORIOT and an Internal Chirpstack LNS.
LoRaWAN BACKHAUL
Add Dual-SIM redundant cellular and Wi-Fi back-haul to your LoRaWAN Network.
E2C FIELD SUITE
Unified data integration across LoRaWAN, Modbus, OPC-UA, and BACnet.
OPERATING SYSTEM
RobustOS Pro – Full Linux Debian Operating System for hosting IoT applications.
RCMS ON-BOARD
RCMS Cloud device management enabled for enhanced scalability.
Example LG3120e Use Cases
Smart Farming/Agriculture
Soil sensors, weather stations, irrigation controllers, and water-quality nodes across large agricultural or environmental monitoring sites share a common challenge: distances too great for wired runs, and cloud connectivity that cannot be assumed reliable. The LG3120e’s integrated LNS manages end-node registration and uplink collection on-device. The Quad-core A53 processor and 2 GB RAM support local pre-processing and buffering that keeps data intact through connectivity gaps, while cellular and dual-band Wi-Fi backhaul provide flexibility based on what infrastructure exists at the site.
Remote Asset Monitoring
Distributed field assets — wellheads, pressure regulators, pump stations, tank farms — are often too spread out for wired networks and too critical for unreliable connectivity. The LG3120e addresses both constraints: built-in LoRaWAN covers scattered sensor nodes across a site without cabling, while the integrated LNS and E2C Field Suite aggregate LoRa sensor data alongside Modbus or OPC-UA readings from legacy field instruments into a single outbound stream. Local Node-RED logic can trigger DO outputs or SMS alerts on threshold breaches, independently of cloud availability.
Industrial Facilities & Plant
In manufacturing and process environments, LoRa sensors for IAQ, temperature, vibration, and energy sub-metering operate alongside wired PLCs and HMI systems running Modbus or BACnet. The LG3120e bridges both worlds via its dual RS-232/485 ports and E2C Field Suite, unifying wired instrument data and wireless sensor traffic at the edge before forwarding to SCADA or cloud analytics. Pre-installed sensor profiles reduce integration time for common LoRa devices; the built-in dashboard surfaces key metrics locally without waiting for cloud round-trips.
Looking for more use cases?
With millions of Robustel devices deployed across more than 100 countries, it’s impossible to capture every use case above. Explore the links below to discover some of the exciting and innovative ways our technology is making an impact worldwide.
This Device is RCMS Ready
RCMS is a cloud-based IoT device management platform that gives you real-time visibility across your entire Robustel fleet. So you can troubleshoot, update, and optimize performance from anywhere at anytime, without sending engineers to site.
Product Mounting Options
Desktop Mount
DIN Rail Mount
Wall Mount
System Architecture
|
Operating System |
RobustOS Pro |
|
CPU |
Quad-core ARM Cortex-A53@2.0 GHz |
|
RAM |
2 GB LPDDR4 |
|
Flash |
8 GB eMMC |
Cellular
|
Supported Technologies |
4G/LTE, 3G, 2G |
|
Antennas |
2 (MAIN + DIV) |
|
Connector |
SMA-K |
|
SIM |
1 x Mini SIM (2FF) |
|
eSIM |
1 x eSIM (MFF2); GSMA SGP.22 compliant; supports profile download/removal and typically up to 8 eSIM profiles |
Ethernet
|
Ethernet Ports |
2 x 10/100 Mbps, LAN or WAN |
|
Magnet Isolation Protection |
1.5 kV |
LoRa
|
Antennas |
1 |
|
Connector |
SMA-K |
|
Frequencies |
US915 |
|
Channel capacity |
Supports up to 8 channels receiving data simultaneously |
Serial Port
|
Serial Ports |
2 x RS-232/485 (software configurable) |
|
Connector |
6-pin 3.5 mm terminal block with lock |
|
Baud Rate |
300–115200 bps |
|
Signal Definition |
RS-232: TXD, RXD, GND |
Digital Input/Output
|
DI/DO Ports |
2 x DI + 2 x DO, wet contact |
|
Connector |
8-pin 3.5 mm terminal block with lock (DI/DO) |
|
Absolute Maximum Voltage |
+30 VDC |
|
Absolute Maximum Current |
100 mA |
|
Signal Definition |
DI1+, DI1-, DI2+, DI2-, DO1+, DO1-, DO2+, DO2- |
Wi-Fi Interface
|
Number of antennas |
1, supporting only 1T1R |
|
Connector |
RP-SMA-K |
|
Standards |
802.11 a/b/g/n/ac/ax; supports AP and client modes |
|
Frequency bands |
2.412–2.472 GHz (2.4 GHz ISM band) |
Other Interfaces
|
TPM |
TPM 2.0 |
|
Reset Button |
1 x RST |
|
LED Indicators |
1 x RUN, 1 x RSSI, 1 x MDM, and 1 x USR |
|
microSD |
1 x microSD, supporting up to 2 TB |
|
Watchdog |
External |
|
USB |
1 x USB 2.0 (host), Type A, 5 V, 500 mA |
|
RTC |
Remains functional up to 5 days after power loss |
Power Supply & Consumption
|
PSU Connector |
2-pin 3.5 mm terminal block with lock |
|
Input Voltage |
12/24 VDC, 9–36 VDC |
|
Power Consumption |
Idle: 1.5 W@12 V |
|
Recommended Power Supply |
12 V DC/1.5 A power adapter |
Physical Characteristics
|
Ingress Protection |
IP30 |
|
Housing & Weight |
Metal, 587 g |
|
Dimensions |
49 x 105 x 128 mm |
|
Installation Options |
Desktop, Wall Mount and 35mm DIN Rail |
|
Operating Temperature |
-25 – +70°C |
|
Storage Temperature |
-40 – +85°C |
|
Relative Humidity |
5 – 95% RH (non-condensing) |
Software Features
|
LoRaWAN Protocols |
V1.0.4 Class A/Class B/Class C |
|
Network Protocols |
PPP, PPPoE, ARP, VLAN, ICMP, NAT, TCP, UDP, DHCP, DNS, DDNS, NTP, HTTP, HTTPS, Telnet, SSH2, SMTP, Static Routing, etc. |
|
VPN Tunnels |
IPsec, OpenVPN, GRE, L2TP, PPTP, DMVPN, WireGuard |
|
Firewalls |
DMZ, anti-DDoS, Filtering (IP/Domain name/MAC address), Port Mapping, Access Control |
|
Remote Management |
RCMS, Web, CLI, SMS |
|
Serial Port Protocols |
Transparent, TCP Client/Server, UDP, Modbus RTU Gateway |
|
SIM Management |
Smart Roaming V3, Language, eSIM Management, E2C Field Suite |
|
Optional Apps |
Request on demand |
Software Development Kit (SDK)
|
Supported Programming Languages |
C, C++, Python, Java, Node.js, etc. (for users to develop own applications) |
|
Flash available for SDK |
6 GB |
|
RAM available for SDK |
1.5 GB |
Regulatory and Type Approvals
|
Environmental |
RoHS 2.0 |
|
EMI |
EN 55032 Conducted Emission Class B |
|
EMS |
EN 61000-4-2 (ESD) Level 3 |
Available Models
|
Model |
Supported Frequency Bands |
Supported LoRa Frequency |
Certifications |
Order Code |
Package Contents |
|
LG3120e-ABJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
EU868 |
CE*, UKCA* |
A015800001 |
1 x Gateway (B Code: B015800001) |
|
LG3120e-ABJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
EU868 |
CE*, UKCA* |
A015800002 |
1 x Gateway (B Code: B015800001) |
|
LG3120e-ACJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
AU915 |
RCM* |
A015800003 |
1 x Gateway (B Code: B015800002) |
|
LG3120e-ACJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
AU915 |
RCM* |
A015800004 |
1 x Gateway (B Code: B015800002) |
|
LG3120e-ADJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
US915 |
FCC*, IC* |
A015800005 |
1 x Gateway (B Code: B015800003) |
|
LG3120e-ADJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
US915 |
FCC*, IC* |
A015800006 |
1 x Gateway (B Code: B015800003) |
|
LG3120e-AEJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
AS923 |
CE* |
A015800007 |
1 x Gateway (B Code: B015800004) |
|
LG3120e-AEJAA-4L-A35GL |
4G: LTE FDD: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66 |
AS923 |
CE* |
A015800008 |
1 x Gateway (B Code: B015800004) |
NOTE:
1. For more information about regional & carrier specific variants please contact us
2. * Denotes Certification in Progress
LG3120e Downloads
Please note that all product downloads are now located on the Robustel Knowledge Base (https://support.robustel.com) the buttons below will take you to the relevant sections for each product.
Product Documentation
Firmware, Software & Applications
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