Data Guard

Prevent runaway data usage in the event of system failure

Dual SIM Link

Dual SIM slots for the ultimate in industrial redundancy.

Smart Reboot

Auto reboot via SMS/time schedule to reactivate SIMS 

Smart Roaming

Offers device-assisted intelligent network selection for roaming SIMs.

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The Robustel R2011 Industrial Cellular Router is a rugged, versatile 4G router with 5 Ethernet ports, dual SIM single standby capability and a range of advanced functions for mission critical IoT or M2M applications.

The R2011 runs on Robustel’s own Linux based Operating System, RobustOS. Developed entirely in-house, this gives way to a very high standard of technical support and high reliability. Robustel offers a Software Development Kit (SDK) to allow additional customisation by using C, C++. It also provides rich Apps to meet fragmented IoT market demands such as:

Highly flexible hosted VPN service so customers can easily enjoy a “fixed IP router”

Invaluable failsafe in case of a system failure and runaway data usage

Smart Reboot
SMS tool to push roaming SIMs from a non-working to working state

Smart Roaming
Provides you with device-assisted intelligent network selection for roaming SIMs to improve performance and reduce risk.


  • Dual-SIM redundancy for continuous cellular network connections
  • Link Manager supports Cellular WAN, Ethernet WAN, WLAN WAN link backup and ICMP detection
  • WAN – Static/DHCP Client
  • RobustOS + SDK + Apps
  • IPsec/OpenVPN/GRE/Wireguard VPN capabilities
  • Management and maintenance via Web/RCMS Cloud
  • Auto reboot via SMS/time schedule
  • Robust industrial design (9 to 36 V DC, desktop or wall mounting or DIN rail mounting)
Cellular Interface
Number of antennas 2 (MAIN + AUX) or 1 (MAIN)
Connector SMA-K
SIM 2 Mini SIMs (2FF)


Ethernet Interface
Number of ports 5 x 10/100 Mbps, 5 x LAN or 4 x LAN + 1 x WAN
WAN port Supports 802.3at PD feature (optional)
Magnet isolation protection 1.5 KV


WiFi Interface
Number of antennas 2 (Wi-Fi1 + Wi-Fi2)
Connector RP-SMA-K
Standards 802.11 b/g/n, supporting AP and Client modes
Frequency bands 2.4 GHz
Security WEP, WPA, WPA2
Encryption 64/128 AES, TKIP
Data speed 2 x 2 MIMO, 300 Mbps


Reset button 1 x RST
LED indicators 1 x RUN, 1 x MDM, 1 x Wi-Fi, 3 x RSSI
Built-in Watchdog, Timer


Software (Basic features of RobustOS)
Network protocols PPP, PPPoE, TCP, UDP, DHCP, ICMP, NAT, HTTP, HTTPs, DNS, ARP, BGP, RIP, OSPF, NTP, SMTP, Telnet, VLAN, SSH2, DDNS, etc
VPN tunnel IPsec, OpenVPN, GRE, WireGuard
Firewall DMZ, anti-DoS, Filtering (IP/Domain name/MAC address), Port Mapping, Access Control
Remote management Web, CLI, SMS


Supported programming language C, C++
Flash available for SDK 16 MB
RAM available for SDK 64 MB


App Center (Available Apps for RobustOS)
Apps* L2TP, PPTP, DMVPN , VRRP, QoS, Captive Portal, WLAN Multi AP, SNMP, Language, RCMS
*Request on demand. For more Apps please visit www.robustel.com.


Power Supply and Consumption
Connector 2-pin 3.5 mm female
Input voltage 9 ~ 36 V DC
Power consumption

Idle: 200 mA@12 V 
Data link: 580mA (peak)@12 V


Physical Characteristics
Ingress protection IP30
Housing & Weight Metal, 350g
Dimensions 127 x 82 x 30 mm
Installations Desktop, wall mounting and 35 mm DIN rail mounting
Operating temperature -35 ~ +75℃
Storage temperature -40 ~ +85℃
Relative humidity 5% ~ 95%


Regulatory and Type Approvals (*In progress)
Environmental ROHS 2.0

EN 55032 Conducted Emission class B 
EN 55032 Radiated Emission class B


IEC 61000-4-2 (ESD) Level 4 
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 61000-4-11 (DIP)


Model PN LTE Category Frequency Bands* Country/Region Certification
(*In progress)
R2011-A-4L-A23CN B070710 Cat 4 4G: LTE FDD: B1/B3/B5/B8
LTE TDD: B34/B38/B39/B40/B41

3G: WCDMA: B1/B5/B8

2G: GSM: B3/B8

China, India CCC*
R2011-A-4L-A12EU B070712 Cat 4 4G:LTE FDD: B1/B3/B7/B8/B20/B28A
LTE TDD: B38/B40/B41

3G: WCDMA: B1/B8

2G: GSM: B3/B8

R2011-A-4L-A03AU B070702 Cat 4 4G: LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28

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

2G: GSM: B2/B3/B5/B8

South America, Oceania RCM

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