Robustel R2120 Industrial Cellular PoE Router
Enhanced PoE-PSE Functionality
Remote PoE Device Management
Ethernet, Wi-Fi and Cellular
R2120 Industrial Cellular PoE Router
R2120 is a specialized industrial cellular PoE router designed for smart security applications. Equipped with 5 Ethernet ports, including 4 PoE-PSE ports, along with 2 Digital Inputs, 2 Digital Outputs, and an RS-485 serial port, this router excels in meeting the unique demands of modern security systems.
- Highly stable 4G/3G/2G cellular connectivity
- Dual SIM card slots for redundant communications
- Supports Ethernet, Wi-Fi and Cellular internet with auto-failover
- 5 x 1000 Mbps Ethernet ports, including 4 PoE-PSE ports compliant with the 802.3af and 802.3at standards
- 2 x Digital Inputs (DI) & 2 x Digital Outputs (DO) for simple monitoring and control
- 1 x RS-485 portfor connection to industrial/legacy device
- Fully programmable operating system with well-documented Software Development Kit (SDK)
- Multiple VPN options available including DMVPN & IPSec
- Free cloud management platform – RCMS with remote PoE device management support
Hardware specs
| Hardware System | |
| CPU | MT7621, 880 MHz |
| RAM | 512 MB |
| Flash | 32 MB |
| Cellular Interface | |
| Numbers of antennas | 2 (MAIN + DIV) |
| Connector | SMA-K |
| SIM | 2 Mini SIM (2FF) |
| Ethernet Interface | |
| Numbers of ports | 5 x 10/100/1000 Mbps, 1 WAN + 4 LAN, or 5 LAN (default) |
| Magnet isolation protection | 1 KV |
| PoE Out Interface | |
| PoE ports | ETH1~ETH4 |
| PoE standards | 802.3at, 802.3af |
| PoE max power per port (at PSE) | Up to 30W |
| Total PoE power budget (at PSE) | Dependent on power supply capacity |
| WiFi Interface | |
| Number of antennas | 2 (Wi-Fi0 + Wi-Fi1) |
| Connector | RP-SMA-K |
| Standards | 802.11 a/b/g/n/ac, 2 x 2 MIMO, supports AP and Client modes |
| Frequency bands | 2.412 ~ 2.472 GHz (2.4 GHz ISM band) 5.15 ~ 5.825 GHz (5 GHz ISM band) |
| Security | WPA, WPA2, WEP, WPA3 |
| Encryption | AES, TKIP, WEP64 |
| Serial Interface | |
| Number of ports | 1 x RS-485 |
| Connector | 1 x 3-pin 3.5 mm female socket |
| ESD protection | ± 8 KV air discharge, ± 4 KV contact discharge |
| Baud rate | 300 bps to 115200 bps |
| Signal definition | RS-485: A, B, GND |
| DI/DO | |
| Type | 2 x DI + 2 x DO, wet contact |
| Connector | 2, 1 x 4-pin 3.5 mm female socket |
| Isolation | 3.75 KV DC (opto-isolator) |
| Absolute maximum VDC | “V+” +30V DC (DI), +30V DC (DO) |
| Absolute maximum ADC | 100 mA (DO) |
| Singal definition | DI1+, DI1-, DI2+, DI2-, DO1+, DO1-, DO2+, DO2- |
Others
| Reset button | 1 x RST |
| LED indicators | 1 x RUN, 1 x RSSI, 1 x Modem, 1 x USR |
| Watchdog | Built-in |
Software features
The Software Basic features of RobustOS include…
Transparent, TCP Client/Server, UDP, Modbus RTU to TCP
Supported programming language C, C++
Flash available for SDK 5 MB
RAM available for SDK 256 MB
Apps* L2TP, PPTP, DMVPN, VRRP, QoS, SNMP, Language, RCMS, Dynamic Route, Captive Portal, Modbus Master, TR069
*Request on demand. For more Apps please visit www.robustel.com.
Robustel Cloud Manager Service (RCMS): RobustLink, RobustVPN, Operation Console
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