R1520LG Industrial LoRaWAN Gateway

Robustel’s R1520LG is a new generation of industrial LoRaWAN gateway, supporting global 4G/3G/2G networks as well as WiFi and PoE-PD.

  • Key Features
  • Specification
  • Downloads
  • Model

R1520LG 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.


RCMS is Robustel’s free router monitoring service that is fully compatible with the R1520LG. 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: https://rcms-cloud.robustel.net


Key Features

  • Supports global LoRaWAN frequency band
  • Compatibility with LoRaWAN and private protocols
  • Embedded LoRaWAN network server
  • Up to 8 channels simultaneous data reception
  • Supports Packet Forwarder Version 2.2.1 and Packet Forwarder Protocol Version 1
  • 802.11b/g/n Wi-Fi support in AP and Client modes
  • 802.3at compliant POE interface for easy power supply
  • Rich interfaces with 1 x RS232 + 1 x RS485 and 2 x ETH
  • Dual SIM card redundancy with built-in 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 i.MX 6ULL, 792Mz
Flash 8GB eMMC


Cellular Interface
Number of antennas 2
Connector SMA-K
SIM 2 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) US915




Max transmitted power +25 dBm
Max sensitivity -140 dBm
Channel Capacity Supports up to 8 channels receive data simultaneously


Serial Interface
Type 1 x RS232/ RS485
Connector 2x 3-pin 3.5 mm female socket
ESD protection 8 KV air, 4KV contact
Baud rate 300bps to 115200bps
Signal RS232: TXD, RXD, GND

RS485: Data+ (A), Data- (B), GND


WIFI Interface
Type 1 x RS232 +1 x RS485
Connector 2x 3-pin 3.5 mm female socket
ESD protection 8 KV air, 4KV contact
Baud rate 300bps to 115200bps
Signal RS232: TXD, RXD, GND

RS485: Data+ (A), Data- (B), GND


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 RSSI,1 x WLAN, 1x LoRa
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-DDoS, 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 4-pin Micro-Fit socket
Input voltage 9 to 60V DC
Power consumption Idle: 1.5w
Data link: 10w (peak)


Physical Characteristics
Housing & Weight Plastic, 238.5g
Dimensions 105 x 90 x 46 mm
Installations Desktop, wall mounting and 35 mm DIN rail mounting
Operating temperature -20 to +60 °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
R1520LG Datasheet


RobustOS Pro Software Manual


*All Robustel Firmware and RobustOS Apps are now available to download from the App Centre section of RCMS Cloud.

If you don’t already have access to RCMS Cloud you can Sign Up  freely.

*Please contact our Technical Support if you have any trouble finding the resources.

Model PN LoRa Frequency Cellular Frequency Bands* Country/



(* In progress)

R1520LG-470M-AA-4L-A35GL B137001 470 Mhz 4G:

LTE FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/ B19/ B20/ B25 /B26 /B28 /B66

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


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


GSM: B2/B3/B5/B8



R1520LG-868M-AB-4L-A35GL B137002 868 Mhz EU CE*
R1520LG-915M-AC-4L-A35GL B137003 915 Mhz AU  RCM*
R1520LG-902M-AD-4L-A35GL B137004 902 Mhz  √ US FCC*
R1520LG-470M-AA-NU B137005 470 Mhz CN  –
R1520LG-868M-AB-NU B137006 868 Mhz EU  CE*
R1520LG-915M-AC-NU B137007 915 Mhz AU RCM*


B137008 902 MHz US FCC*

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

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