Milesight UR75 Industrial 5G Router with Wi-Fi 6 and GPS

Milesight UR75-504AE-W2 Industrial 5G Router

The Milesight UR75-504AE-W2 is an industrial 5G router from the Ultra Series, built for M2M and IoT applications in demanding environments. It runs a quad-core ARM Cortex-A55 processor at 2 GHz with 1 GB LPDDR4x RAM. The cellular module supports 5G Sub-6 GHz in NSA and SA modes, with automatic fallback to 4G LTE and WCDMA. Dual carrier aggregation delivers download speeds up to 4.67 Gbps.

Beyond cellular connectivity, the UR75-504AE-W2 adds RS232 and RS485 serial ports with Modbus TCP/RTU gateway support, galvanically isolated digital I/O, integrated multi-constellation GNSS, Wi-Fi 6 dual-band, and an M.2 NVMe SSD expansion slot. Dual Mini SIM slots with automatic failover, a hardware watchdog, and an operating range of -40°C to +70°C make it a reliable choice for unattended deployments.

Key Features

• 5G Sub-6 GHz NSA/SA with dual carrier aggregation – up to 4.67 Gbps download; automatic fallback to 4G LTE and WCDMA
• Dual Mini SIM-2FF slots (1.8V/3V) with automatic failover between SIM cards and network types
• Quad-core ARM Cortex-A55 2 GHz CPU, 1 GB LPDDR4x RAM, 1 GB NAND Flash, M.2 NVMe SSD expansion slot
• Wi-Fi 6 dual-band: 2.4 GHz (600 Mbps) + 5 GHz (1200 Mbps), 2×2 MIMO on each band; AP and client modes
• 5 x Gigabit Ethernet: 1 x WAN + 4 x LAN, full/half duplex auto-sensing, 1.5 kV RMS isolation
• RS232 + RS485 serial ports with Modbus TCP/RTU client and Modbus gateway (Modbus RTU to Modbus TCP)
• GPS/GLONASS/BDS/Galileo/QZSS multi-constellation GNSS with 2m CEP accuracy and NMEA0183 output
• 1 x DI + 1 x DO (galvanic isolation): dry contact input, wet contact output (max 0.3A at 30 VDC)
• VPN support: OpenVPN, IPsec, L2TP, PPTP with ACL, DMZ, and SYN-Flood protection
• Node-RED development environment, Milesight DeviceHub for centralised remote management
• Hardware watchdog with automated recovery; event alarms for network changes, VPN state, and cellular traffic
• IP30 metal housing, -40°C to +70°C operating range, DIN rail, wall, or desktop mounting; 3-year warranty

Applications

Smart Grid and Utility Telemetry

The UR75-504AE-W2 connects directly to smart meters, RTUs, and substation equipment via RS485 with Modbus TCP/RTU support. 5G backhaul delivers the throughput and low latency required for real-time telemetry across distributed grid assets. Dual SIM failover and the hardware watchdog maintain uptime without site visits.

Industrial Automation and SCADA

RS232 and RS485 ports provide direct serial connectivity to PLCs, HMIs, and SCADA field devices. The Modbus gateway function converts Modbus RTU to Modbus TCP over the cellular link without additional conversion hardware. Galvanically isolated DI/DO ports handle discrete sensor inputs and relay outputs in the same enclosure.

Environmental Monitoring and Water Management

The UR75 reads sensor inputs via the DI port and triggers responses via the DO port, all controllable by MQTT or SMS. Integrated GNSS logs device position alongside environmental data, useful for mobile monitoring units and river level gauges at remote sites. The -40°C operating floor covers winter deployments in exposed locations.

Digital Signage and Media Distribution

5G Sub-6 GHz with dual carrier aggregation supports the high-bandwidth feeds required by digital signage in retail, transport hubs, and public venues where wired backhaul is unavailable. Wi-Fi 6 provides local wireless distribution to screens and media players from the same device.

Connected Medical Equipment

The UR75 provides 5G cellular backhaul for connected diagnostic and monitoring equipment in hospitals, care facilities, and mobile health units. VPN tunnels and ACL-based firewall rules isolate medical device traffic. The compact form factor fits in equipment cabinets and on DIN rails within medical enclosures.

Finance and Secure Payment Terminals

OpenVPN and IPsec tunnels, ACL filtering, and SYN-Flood protection make the UR75 a suitable backhaul router for payment terminals, ATMs, and kiosks. Dual SIM failover prevents transaction failure when a primary network is unavailable. SNMP v1/v2c/v3 integration supports monitoring within existing network management systems.

Frequently Asked Questions

Does the Milesight UR75-504AE-W2 support dual SIM?

Yes. The UR75-504AE-W2 has two Mini SIM-2FF slots (1.8V/3V). It supports automatic failover and failback between SIM cards, between cellular networks, and between cellular, Ethernet, and Wi-Fi WAN connections. This means the router switches to the backup path when the primary connection fails and returns to the primary when it recovers.

What is the difference between 5G NSA and SA on the UR75?

NSA (Non-Standalone) uses an existing 4G LTE core network to anchor the 5G radio connection. SA (Standalone) uses a native 5G core network and delivers the full performance benefits of 5G including lower latency. The UR75 supports both modes, making it compatible with current UK 5G networks (which are predominantly NSA) as well as SA networks as they roll out.

Can I manage multiple UR75 routers centrally?

Yes. Milesight DeviceHub provides centralised configuration, firmware updates, real-time monitoring, and reporting across fleets of UR75 routers. It supports bulk configuration and remote troubleshooting without needing physical access to each device. MilesightVPN provides secure VPN management alongside DeviceHub.

What serial protocols does the UR75 support?

The UR75 supports transparent serial modes (TCP client/server, UDP server, MQTT client), Modbus TCP/RTU client, and Modbus gateway operation, which converts Modbus RTU serial traffic to Modbus TCP over the cellular link. Baud rates from 300 bps to 230400 bps are supported on both RS232 and RS485 ports.

What SIM card do I need for the Milesight UR75?

The UR75-504AE-W2 takes a standard Mini SIM (2FF) format. For deployments requiring a fixed IP address – such as VPN connectivity, remote SCADA access, or CCTV monitoring – a fixed IP SIM card is the correct choice. For general connectivity with lower cost, a standard data SIM or roaming SIM card works with the standard APN configuration.

What is the operating temperature range of the UR75?

The UR75 operates from -40°C to +70°C (-40°F to +158°F). Storage temperature is -40°C to +85°C. Humidity tolerance is 0% to 95% non-condensing at 25°C. The IP30-rated metal enclosure is suitable for DIN rail installation inside industrial cabinets and outdoor enclosures.