The 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.
The 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.
Enhanced PoE-PSE Functionality: The R2120 features 4 PoE-PSE ports compliant with the 802.3af and 802.3at standards, enabling effortless power and data transmission through a single Ethernet cable to simplify field installation.
Remote PoE Device Management: The R2120 goes beyond standard PoE-PSE functions with its support for remote management capabilities. Users can conveniently schedule restarts or power cycles for PoE devices as required, enhancing operational control and efficiency.
Key Features
| 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 (Basic features of RobustOS) | |
| Network protocols | PPP, PPPoE, TCP, UDP, DHCP, ICMP, NAT, HTTP, HTTPs, DNS, NTP, SMTP, Telnet, ARP, VLAN, SSH2, DDNS, etc. |
| VPN tunnel | IPsec, OpenVPN, GRE, WireGuard |
| 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 to TCP |
| Other | Smart Roaming v2 |
| SDK | |
| Supported programming language | C, C++ |
| Flash available for SDK | 5 MB |
| RAM available for SDK | 256 MB |
| App Center (Available Apps for RobustOS) | |
| 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. | |
| Cloud Platform | |
| Robustel Cloud Manager Service (RCMS) | RobustLink, RobustVPN, Operation Console |
| Power Supply and Consumption | |
| Connector | 2-pin 3.5 mm female socket with lock |
| Input voltage | 44 ~ 57 V DC |
| Power consumption | Idle: 4.4W@48 V, excluding the PoE consumption Data link: 12W (Max) @48 V, excluding the PoE consumption |
| Physical Characteristics | |
| Ingress protection | IP30 |
| Housing & Weight | Aluminum, 539 g |
| Dimension | 143 x 105 x 49 mm |
| Installations | Desktop, wall mounting and DIN rail mounting |
| Operating temperature | -20 ~ +70 °C |
| Storage temperature | -40 ~ +85 °C |
| Relative humidity | 5 ~ 95% RH (Non-Condensing) |
| Regulatory and Type Approvals | |
| Evvironmental | RoHS2.0, WEEE |
| EMI | EN 55032 Conducted Emission Class B EN 55032 Radiated Emission Class B |
| EMS | EN 61000-3-2 (Harmonic Current) EN 61000-3-3 (Voltage Flicker) EN 61000-4-2 (ESD) Contact Level 2, Air Level 3 EN 61000-4-3 (RS) Level 2 EN 61000-4-4 (EFT) Level 2 EN 61000-4-5 (Surge) Line to line Level 3 EN 61000-4-6 (CS) Level 2 |
RT150_HM_R2120_V1.0.0
RT150_2D_DWG_R2120_V1.0.0
*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 | Frequency Bands | Country
/Region |
Certifications (*In progress) |
Package Contains |
| R2120-A5AAA-4L-A12EU | A015000001 | 4G: LTE FDD: B1/B3/B7/B8/B20/B28A LTE TDD: B38/B40/B41 3G: WCDMA: B1/B8 2G: GSM/EDGE: B3/B8 |
EMEA | CE*, UKCA*, CB* | 1 x R2120 Router 1 x DIN Rail Mounting Kit |
| R2120-A5AAA-4L-A12EU | A015000004 | 4G: LTE FDD: B1/B3/B7/B8/B20/B28A LTE TDD: B38/B40/B41 3G: WCDMA: B1/B8 2G: GSM/EDGE: B3/B8 |
EMEA | CE*, UKCA*, CB* | 1 x R2120 Router 1 x DIN Rail Mounting Kit 2 x Cellular Antenna 2 x Wi-Fi Antenna 1 x Power Adapter |
| R2120-A5AAA-4L-A13AU | A015000002 | 4G: LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28 LTE TDD: B40 3G: WCDMA: B1/B2/B4/B5/B8 2G: GSM/EDGE:B2/B3/B5/B8 |
ANZ | RCM* | 1 x R2120 Router 1 x DIN Rail Mounting Kit |
| R2120-A5AAA-4L-A13AU | A015000005 | 4G: LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28 LTE TDD: B40 3G: WCDMA: B1/B2/B4/B5/B8 2G: GSM/EDGE:B2/B3/B5/B8 |
ANZ | RCM* | 1 x R2120 Router 1 x DIN Rail Mounting Kit 2 x Cellular Antenna 2 x Wi-Fi Antenna 1 x Power Adapter |
*For more information about frequency bands in different countries, please contact your Robustel sales representative.