Dual SIM failover
Two mini SIM slots switch automatically between operators.

LTE Cat 4 industrial router with PoE and dual SIM
Industrial LTE Cat 4 router with dual SIM failover, Wi-Fi 5, BLE 5.2 and GNSS. Four 10/100 Ethernet ports, two serial ports and PoE input. Anodised aluminium IP30 housing, 8–32 V DC, –30 °C to +75 °C.
Dispatch and lead time are confirmed in the quote.
Manufacturer warranty24 months
Overview
The WR220LEU is built to provide stable internet connectivity for industrial environments where downtime is not acceptable. It connects equipment, sensors, and systems to a central network, allowing continuous data flow and remote access. This makes it suitable for locations where wired infrastructure is limited or unreliable.
The router uses LTE Cat 4 for primary connectivity, with dual SIM support that automatically switches when signal or network issues occur. This helps maintain a continuous connection without manual intervention. It also supports Wi-Fi 5, allowing nearby devices to connect locally while sharing the cellular network. Wired connectivity is handled through 1 WAN and 3 LAN Ethernet ports, making it easy to integrate with existing network setups. VPN support ensures that all transmitted data remains secure across public and private networks.
The built-in GNSS receiver supports multiple satellite systems, improving positioning reliability in different environments. This allows the device to provide accurate real-time location data, typically within a few metres. This is useful for tracking mobile deployments or monitoring fixed assets across wide areas. Location data can be viewed through a web interface or remote platform.
The router supports BLE 5.2, enabling it to collect data from nearby wireless sensors. This reduces the need for additional gateways and simplifies deployment. It also includes RS232 and RS485 interfaces, allowing direct communication with industrial equipment such as PLCs. This makes it possible to gather operational data and send it to cloud platforms for monitoring and analysis.
The device operates within a wide voltage range of 8–32V DC, making it compatible with different power systems. It is designed to function in temperatures from –30 °C to +75 °C, allowing use in both indoor and outdoor environments. Its compact metal enclosure supports installation in control cabinets or field deployments where space is limited.
The router includes configurable digital input and output interfaces, enabling interaction with external systems such as alarms or sensors. This allows event-based actions like triggering alerts or controlling connected devices. Additional support for USB and serial communication expands its ability to connect with different types of equipment, making it adaptable for various industrial setups.
Two mini SIM slots switch automatically between operators.
Secure VPN communication for remote sites.
Real-time location reporting of the router.
Collects data from nearby BLE sensors.
Device monitoring, configuration and firmware from a central platform.
802.3at PoE through the LAN1 port, or 8–32 V DC.
Technical data
| General Specifications | |
|---|---|
| Casing Material | Anodized aluminium housing and panels |
| Dimensions | 110 (W) x 95 (D) x 45 (H) mm (4.33'' x 3.74'' x 1.77'') (Excluding antenna connectors and mounting bracket) |
| Weight | 408g (0.9 lb) |
| Mounting Options | DIN rail, wall, and surface mounting |
| Operating Voltage | 8-32V DC, reverse polarity protection, voltage surge/transient protection |
| Power Consumption | Idle: < 5 W, Max: < 21 W |
| Operating Temperature | -30 °C to 75 °C |
| Operating Humidity | 10% to 90% non-condensing |
| IP Rating | IP30 |
| System Characteristics | |
| CPU | Qualcomm, 650 MHz |
| RAM | 128MB, DDR2 |
| FLASH Memory | 16MB |
| Interfaces | |
| Ethernet Ports | WAN: 1 × RJ45 10/100 Mbps LAN: 3 × RJ45 10/100 Mbps |
| Power & IO | 4-PIN connector: 1 × PWR 1 × GND 1 × Digital input (0–3.3 V DC: low logic level / 4.0–40 V DC: high logic level) 1 × Open collector output (30 VDC, 0.2 A) |
| PoE | PoE input through LAN1 port, compatible with IEEE 802.3at |
| RS-232/RS-485 | 2 x Serial ports (RS-232/RS-485 configurable) |
| USB | 1 x USB 2.0 Type C |
| SIM | 2 × SIM slots (Mini SIM – 2FF); optional eSIM (MFF2) support |
| Antennas | |
| 2 x SMA for Cellular | |
| 1 x SMA for GNSS | |
| 3 x RP-SMA for Wi-Fi 2.4G/5G/BLE antennas | |
| LED Indicators | |
| 1 x Power LED | |
| 1 x NET LED | |
| 1 x WIFI LED | |
| 1 x GPS LED | |
| 1 x Cellular connection status LED | |
| 3 x Signal strength LEDs | |
| 8 x LAN status LEDs | |
| Reset Button | |
| Reboot/Factory reset | |
| Grounding Point | |
| 1 x Grounding screw | |
| Cellular | |
| 3GPP Release | Release 9 |
| Cellular Bands | LTE-FDD: B1/B3/B5/B7/B8/B20/B28 LTE-TDD: B38/B40/B41 WCDMA: B1/B5/B8 GSM/EDGE: B3/B8 |
| Peak Rates | LTE-FDD: 150 Mbps DL/50 Mbps UL LTE-TDD: 130 Mbps DL/30 Mbps UL DC-HSPA+: 21 Mbps DL/5.76 Mbps UL WCDMA: 384 Kbps DL/384 Kbps UL EDGE: 236.8 Kbps DL/236.8 Kbps UL GPRS: 85.6 Kbps DL/85.6 Kbps UL |
| WLAN | |
| Wireless Mode | IEEE 802.11 a/b/g/n/ac (Wi-Fi 5) |
| Wi-Fi Data Rate | 433 Mbps (5 GHz) and 300 Mbps (2.4 GHz) (MU-MIMO) |
| Operating Mode | Access Point (AP), Station (STA) |
| Wi-Fi Security | WPA2-PSK, WPA-PSK, AES-CCMP, TKIP |
| Wi-Fi Users | Up to 75 simultaneous connections |
| Ethernet | |
| WAN | 1 x WAN port 10/100 Mbps, compliant with IEEE 802.3, IEEE 802.3u standards, supports auto MDI/MDIX crossover |
| LAN | 3 x LAN ports, 10/100 Mbps, compliant with IEEE 802.3, IEEE 802.3u standards, supports auto MDI/MDIX crossover |
| BLE | |
| BLE Type | BLE 5.2 |
| GNSS Specifications | |
| GNSS Type | All-in-One GNSS receiver |
| Constellations & Frequency | GPS/GLONASS/BDS/Galileo/QZSS |
| Protocols | NMEA 0183 |
| Sensitivity | Cold start: -149 dBm Reacquisition: -159 dBm Tracking: -165 dBm |
| Position Accuracy (CEP) | Autonomous: <2 m |
| TTFF (Open Sky) | Cold start: 26s average Hot start: 1s average |
| Coordinates | Displays GNSS coordinates and provides map view via WebUI and Nebulink system |
| Firmware Features | |
| Server Software | Integrated with the Nebulink system |
| Operating System | OpenWRT (Linux based) |
| Cellular (Firmware) | |
| SIM Switch | 2 SIM cards, auto-switch cases: Weak signal, Data limit, Network fail, Data connection fail |
| Idle SIM Protection | The inactive SIM of dual-SIM is maintained in an idle state without any data traffic until activated |
| SMS | |
| Reboot, Restore factory settings, Upgrade firmware; Switch SIM, Set APN, Set SSID; Get device status (hardware/software version, SN, MAC, Nebulink connection status, cellular status); Set/Get device output status | |
| APN | |
| Auto APN | |
| Network | |
| Routing | Static routing, Dynamic routing (RIP v1/v2) |
| Network Protocols | TCP, UDP, IPv4, ICMP, NTP, DNS, HTTP, HTTPS, SFTP, FTP, SSL/TLS, ARP, PPP, PPPoE, SSH, DHCP, Telnet, SNMP, MQTT |
| VLAN | Port and tag-based VLAN separation |
| Connection Monitoring | Ping Reboot, Periodic Reboot, LCP and ICMP for link inspection |
| Firewall | Port forward, Traffic rules, Website filter, MAC filter |
| DHCP | Static and dynamic IP allocation, DHCP server configuration, status, static leases |
| QoS | Traffic priority queuing by source/destination, service, protocol or port |
| DDNS | 18 pre-defined service providers and manual configuration supported |
| Link Management | Wi-Fi WAN, Mobile, Wired options, each of which can be used as an automatic Failover |
| Load Balancing | Balance Internet traffic over multiple WAN connections |
| Hotspot | |
| Captive portal (hotspot), internal/external Radius server, Radius MAC authentication, SMS authorisation,internal/external landing page, walled garden, URL parameters, user management, Editable portal themes, remote configuration and management via Nebulink | |
| Traffic Management | |
| Mobile traffic monitoring on a daily, weekly, and monthly basis | |
| VPN | |
| OpenVPN | Multiple clients and a server can run simultaneously, 12 encryption methods |
| OpenVPN Encryption | DES-CBC 64, RC2-CBC 128, DES-EDE-CBC 128, DES-EDE3-CBC 192, DESX-CBC 192, BF-CBC 128, RC2-40-CBC 40, CAST5-CBC 128, RC2-64-CBC 64, AES-128-CBC 128, AES-192-CBC 192, AES-256-CBC 256 |
| IPsec | IKEv1, IKEv2, with 5 encryption methods for IPsec (DES, 3DES, AES128, AES192, AES256) |
| GRE | GRE tunnel, GRE tunnel over IPsec support |
| PPTP/L2TP | Client/Server instances can run simultaneously, L2TP over IPsec support |
| Security | |
| Authentication | Pre-shared key, digital certificates, Internal & External RADIUS users authentication, IP & login attempts block |
| Firewall | NAT, Domain filter, IP/MAC filter, DMZ, DDoS |
| DDoS Prevention | SYN flood protection, Remote ICMP requests, SSH attack prevention, HTTP attack prevention |
| Data Quota Mangement | Mobile data limit, customisable period, start time |
| Domain Filter | Blacklist for blocking out unwanted websites, Whitelist for specifying allowed sites only |
| Access Control | Flexible access control of SSH, Web interface, CLI and Telnet |
| DATA TO SERVER | |
| Protocol | HTTP(S), MQTT |
| MODBUS | |
| Supported Modes | Client |
| Supported Connection Types | TCP, RTU |
| Supported Data Formats | 8-bit: INT, UINT; 16-bit: INT, UINT (MSB or LSB first); 32-bit: float, INT, UINT (ABCD (big-endian), DCBA (little-endian), CDAB, BADC), HEX, BOOL |
| MQTT Gateway | |
| Modbus MQTT Gateway Allows sending commands and receiving data from MODBUS Server through MQTT broker | |
| Serial | |
| Serial Types | Console, Serial over IP, MODBUS |
| Input / Output | |
| Events | Supports I/O event reporting to the MQTT/TCP server |
| I/O Control | Set I/O conditions to initiate event |
| USB | |
| Applications | USB-to-serial |
| External Devices | Supports external HDD and flash drive to expand USB storage |
| Storage Formats | FAT, FAT32, ext2, ext3, ext4 |
| Device Monitoring and Management | |
| Web UI | HTTP/HTTPS, status, configuration, FW update, CLI, troubleshoot, firmware update availability notifications, system log, kernel log, Internet status |
| FOTA | Firmware update from server, automatic notification |
| SSH | SSH (v1, v2) |
| SMS | SMS status, SMS configuration |
| TR-069 | EasyCwmp |
| MQTT | MQTT publisher |
| SNMP | SNMP (v1, v2), SNMP Trap, Brute force protection |
| Remote Management Platform | Nebulink System |
| Firmware / Configuration | |
| WebUI Upgrade | Update FW from file, check FW on server, configuration backup |
| FOTA | Update FW |
| Nebulink | Update FW/configuration for multiple devices via Nebulink system |
| Preserve Configuration | Update FW without losing current configuration |
| Factory Default Restoration | A full factory reset restores all system settings, including the IP address, PIN, and user data to the default manufacturer's configuration |
| Compliance Specifications | |
| Reliability Standards | Vibration: ISO16750-3 Shock: IEC 60068-2-27 |
| Regulatory & Type Approvals | Regulatory CE*, RED EN18031*, RoHS* |
| Safety Standards | EN IEC 62368-1:2020 + A11:2020 EN IEC 62311:2020 |
No specification rows match the filter.
Compliance
Compliance as listed in the Queclink WR220LEU specification.
Applications
The router enables continuous connectivity for buses, trains, and transit systems. Dual SIM failover ensures uninterrupted communication, while GNSS tracking helps monitor vehicle location in real time.
In factory environments, the device connects PLCs and machinery through RS232/RS485 interfaces. This allows operators to monitor equipment performance and collect operational data remotely.
The router supports secure video transmission from surveillance systems using LTE and wired connections. VPN support helps protect sensitive data, while stable connectivity ensures continuous monitoring.
For retail locations, the device provides reliable internet for POS systems and in-store connectivity. Wi-Fi support allows multiple devices to connect, while failover ensures business continuity.
The router connects remote infrastructure such as metres and control systems. Its wide temperature tolerance and stable connectivity make it suitable for field deployments where conditions can vary.
Small and remote business locations benefit from quick deployment using PoE and cellular connectivity. The device provides a simple way to establish a reliable network without complex infrastructure.
Questions
LTE Cat 4 with up to 150 Mbps downlink, according to the Queclink description.
8–32 V DC with reverse polarity and surge protection, or PoE input through the LAN1 port, compatible with IEEE 802.3at.
–30 °C to +75 °C, 10–90 % humidity, non-condensing; the housing is rated IP30.
Two serial ports, each configurable as RS-232 or RS-485, plus a USB 2.0 Type-C port.
Optional eSIM (MFF2) support, in addition to two mini SIM (2FF) slots.
110 × 95 × 45 mm excluding connectors and the mounting bracket, 408 g.
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Manufacturer warranty24 months
Europe & United Kingdom
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