Robustel R2120
5G RedCap
Industrial 5G RedCap Dual-SIM PoE-PSE Router with RS-485
The Robustel R2120 5G RedCap incorporates 5G RedCap connectivity into Robustel’s PoE-PSE industrial router. Built around the same hardened aluminium enclosure and RobustOS architecture as the R2120 series, this variant integrates 5G RedCap (3GPP Release 17) as its primary cellular technology delivering throughput and 5G core network access for deployments where those capabilities are a genuine operational requirement, without the cost and complexity of full 5G NR.
At its core, the R2120 5G RedCap is a purpose-built connectivity hub for security and industrial automation applications. Five Gigabit Ethernet ports four of which deliver PoE-PSE output compliant with IEEE 802.3af and 802.3at at up to 30W per port allow IP cameras, access controllers, sensors, and other powered field devices to be connected and powered through a single cable run. Combined with dual-SIM cellular failover, RS-485 serial connectivity, four opto-isolated digital I/O ports, and Wi-Fi 5, the R2120 5G RedCap gives engineers and integrators a single device capable of handling connectivity, power distribution, serial bridging, and alarm I/O in environments where running separate infrastructure for each function is neither practical nor cost-effective.
5G REDCAP CELLULAR
5G NR SA with 4G fallback and Dual-SIM support for resilient, always-on connectivity
PoE-PSE
4× IEEE 802.3af/at PoE-PSE ports — up to 30W per port to power field devices directly
INTERFACES
1x WAN, 4x LAN, 1x RS-485, 2x DI/DO, Wi-Fi 5 (2.4 & 5 GHz)
OPERATING SYSTEM
RobustOS — lightweight Linux kernel with full C/C++ SDK
RCMS ON-BOARD
Cloud device management with remote PoE scheduling and OTA firmware updates.
Example R2120 Use Cases
5G-Connected IP Surveillance
Deploy and power IP cameras and NVRs at construction sites, industrial facilities, or public infrastructure over a single Ethernet cable no separate power run required. The R2120’s 5G RedCap backhaul delivers the throughput headroom that high-resolution video feeds demand, while dual-SIM failover and RCMS remote PoE management keep cameras online and controllable without a site visit.
Smart City Public Infrastructure
Provides secure, high-throughput 5G backhaul for street lighting controllers, traffic management nodes, and environmental sensors. The RS-485 port bridges legacy SCADA and monitoring protocols to IP networks, while digital I/O enables direct alarm signalling and remote switching all managed centrally via RCMS from a single operations dashboard.
Industrial Remote Networking
Connect RS-485-enabled PLCs, RTUs, and industrial sensors using Modbus RTU to TCP bridging, with digital inputs for alarm detection and digital outputs for direct equipment control. The R2120’s 5G RedCap cellular primary link with 4G/LTE fallback and dual-SIM redundancy ensures monitoring continuity in locations where fixed-line infrastructure is unavailable or impractical.
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 |
|
CPU |
MT7621, 880MHz |
|
RAM |
512MB |
|
Flash |
32MB |
Cellular
|
Supported Technologies |
5G RedCap, 4G/LTE |
|
Antennas |
2 (MAIN + DIV) |
|
Connector |
SMA-K |
|
SIM |
2 x Mini SIM (2FF) |
Ethernet
|
Ethernet Ports |
5 x 10/100/1000 Mbps – 1 x WAN + 4 x LAN or 5 x LAN (Default) |
|
Magnet Isolation Protection |
1 KV |
PoE Out
|
PoE Ports |
ETH1 – ETH4 |
|
PoE Standards |
802.3at, 802.3af |
|
PoE Max Power per Port (PSE) |
Up to 30W |
|
Total PoE Power Budget (PSE) |
Dependent on PSU Capacity |
Serial Port
|
Serial Ports |
1 x RS-485 |
|
Connector |
1 x 3-pin 3.5mm female socket |
|
Baud Rate |
300 bps – 115200 bps |
|
Signal Definition |
RS-485: A, B, GND |
Digital Input/Output
|
DI/DO Ports |
2 x DI + 2 x DO (wet contact) |
|
Connector |
2, each with 4-pin 3.5mm female sockets |
|
Isolation |
3.75 KV DC (opto-isolator) |
|
Absolute Maximum VDC |
+30V DC (DI), +30V DC (DO) |
|
Absolute Maximum ADC |
100 mA (DO) |
|
Signal Definition |
DI1+, DI1-, DI2+, DI2-, DO1+, DO1-, DO2+, DO2- |
Wi-Fi
|
Wi-Fi Antennas |
2 (Wi-Fi 0 + Wi-Fi 1) |
|
Connector |
RP-SMA-K |
|
Standards |
802.11 a/b/g/n/ac, 2 x 2 MIMO, supporting AP and Client modes |
|
Frequency Bands |
2.412 ~ 2.472 GHz (2.4 GHz ISM band) |
|
Security |
WPA, WPA2, WEP, WPA3 |
|
Encryption |
AES, TKIP, WEP64 |
Other Interfaces
|
Reset Button |
1 x RST |
|
LED Indicators |
1 x RUN, 1 x RSSI, 1 x MDM, 1 x USR |
|
Watchdog |
External |
Power Supply & Consumption
|
PSU Connector |
2-pin 3.5mm female socket with lock |
|
Input Voltage |
44 – 57 VDC (with PoE-PSE) |
|
Power Consumption |
Idle: 4.5 W@48 V, excluding the PoE consumption |
|
Recommended Power Supply |
48 V DC, 1.25 A (60 W) |
Note:
1. Total power = System 12 W + ∑PoE loads
2. For 100 m cable runs with 30 W loads per port, consider 54 V DC PSU
Physical Characteristics
|
Ingress Protection |
IP30 |
|
Housing & Weight |
Aluminium, 539g |
|
Dimensions |
49x105x143mm |
|
Installation Options |
Desktop, Wall Mount and 35mm DIN Rail |
|
Operating Temperature |
-20 – +70°C |
|
Storage Temperature |
-40 – +85°C |
|
Relative Humidity |
5 – 95% RH (non-condensing) |
Software Features
|
Network Protocols |
PPP, PPPoE, TCP, UDP, DHCP, ICMP, NAT, HTTP, HTTPs, DNS, NTP, SMTP, Telnet, ARP, VLAN, SSH2, DDNS, etc. |
|
VPN Tunnels |
IPsec, OpenVPN, GRE, 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 to TCP |
|
SIM Management |
Smart Roaming V3 |
|
Optional Apps |
L2TP, PPTP, DMVPN, VRRP, QoS, SNMP, Language, RCMS, Dynamic Route, Captive Portal, Modbus Master, TR069, Edge2Cloud, etc. |
Software Development Kit (SDK)
|
Supported Programming Languages |
C, C++ |
|
Flash available for SDK |
5MB |
|
RAM available for SDK |
256MB |
Regulatory and Type Approvals
|
Environmental |
RoHS 2.0, WEEE |
|
Testing |
IEC 60068-2-6 (Sinusoidal Vibration) |
|
EMI |
EN 55032 Conducted Emission Class B |
|
EMS |
EN 61000-3-2 (Harmonic Current) |
Available Models
|
Model |
Supported Frequency Bands |
Certifications |
Order Code |
Package Contents |
|
R2120-A5AAA-5R-D11EU |
5G NR SA: N1/N3/N5/N7/N8/N20/N28/N38/N40/N41/N77/N78 |
CE* UKCA* RCM* |
A015000007 |
1 x R2120 Router (B Code: B015000004) |
|
R2120-A5AAA-5R-D11EU |
5G NR SA: N1/N3/N5/N7/N8/N20/N28/N38/N40/N41/N77/N78 |
CE* UKCA* RCM* |
A015000008 |
1 x R2120 Router (B Code: B015000004) |
NOTE:
1. For more information about regional & carrier specific variants please contact us
2. * Denotes Certification Underway
R2120 5G RedCap 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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