UR35 Series – Dual SIM 4G Industrial Router
The UR35 is Milesight’s mid-range industrial cellular router, built for fixed and semi-permanent deployments requiring reliable 4G connectivity, serial protocol support, and remote management.
View UR35 ProductsWhat the UR35 Is Built For
Industrial remote monitoring, SCADA connectivity, and field-site networking where reliability and remote management matter more than throughput.
The UR35 sits between Milesight’s entry-level UR32 and the higher-specification UR75. It provides the dual SIM failover, industrial serial interfaces, and VPN capability that the majority of industrial IoT applications require, without the complexity or cost of higher-tier hardware.
The router supports active-standby dual SIM operation, switching automatically between SIM cards on connectivity loss. The RS232 and RS485 serial ports allow direct connection to meters, PLCs, sensors, and legacy equipment using Modbus RTU and ASCII protocols – making the UR35 a practical choice for modernising brownfield infrastructure without replacing existing field devices.
VPN support covers OpenVPN, IPsec IKEv2, L2TP, PPTP, and GRE, with up to five simultaneous VPN tunnels. The router runs a Linux-based OS and exposes a full web UI, CLI, and SNMP interface. DeviceHub cloud management is supported for organisations managing multiple deployed units.
Key Specifications
[VERIFY specifications against the current Milesight UR35 datasheet before publishing product listings.]
| Specification | Detail |
|---|---|
| Cellular standard | 4G LTE Cat 4 / 3G UMTS / 2G EDGE fallback |
| Max downlink | 150 Mbps (LTE Cat 4) |
| Max uplink | 50 Mbps (LTE Cat 4) |
| SIM slots | 2 x nano SIM; active-standby failover with configurable ping detection |
| WAN | 1 x Gigabit Ethernet (RJ45) |
| LAN | 3 x Gigabit Ethernet (RJ45) |
| Serial ports | RS232 (DB9) + RS485 (terminal block); Modbus RTU/ASCII/TCP |
| Digital I/O | 2 x digital input, 1 x digital output (model dependent) |
| VPN protocols | OpenVPN, IPsec IKEv2, L2TP, PPTP, GRE, WireGuard |
| Power input | 9-48V DC; reverse polarity protection |
| Operating temperature | -40°C to +70°C |
| Enclosure | Aluminium alloy; DIN rail and wall mount |
| Certifications | CE, FCC, RoHS, REACH |
| Management | Web UI, CLI (SSH), SNMP v1/v2c/v3, TR-069, DeviceHub |
UR35 Variants
Key variants differ by cellular band support, I/O complement, and optional modules. [VERIFY current variant lineup with Milesight before listing products.]
EU 4G LTE Standard
Standard EU-band variant for UK and European deployments. Covers B1, B3, B7, B8, B20, B28 – the primary bands used by UK mobile operators.
EU 4G LTE with Wi-Fi
Adds dual-band 802.11 a/b/g/n/ac Wi-Fi. Suitable for sites requiring cellular WAN and local Wi-Fi access point from a single unit.
EU 4G LTE with GNSS
Adds integrated GNSS (GPS/GLONASS) positioning. Used in applications requiring location data alongside cellular connectivity.
Typical UR35 Deployments
Where the UR35 is most commonly specified in UK projects.
Water and Wastewater Remote Telemetry
Pumping stations, boreholes, and treatment works typically use RS485 to connect existing PLCs and flow meters. The UR35 bridges these serial devices to an IP network over 4G without requiring panel replacement, while VPN tunnels maintain a secure path back to the SCADA head-end.
Roadside and Transport Infrastructure
Traffic signal controllers, level crossing systems, and roadside equipment use the UR35 as a primary WAN device. The wide temperature range and DIN rail mounting suit cabinet installations, and dual SIM prevents single-operator outages from taking a site offline.
Energy and Grid Monitoring
Substations and distributed energy assets use the UR35 to provide secure, out-of-band management connectivity. SNMP and VPN support integrate with existing NMS platforms, and digital I/O allows basic alarm signalling without additional hardware.
Temporary and Construction Site Connectivity
The UR35 deploys quickly on 9-48V DC power with no local internet infrastructure required. Construction sites use it to provide temporary connectivity for CCTV, access control, and site management systems during the build phase.
Ready to specify the UR35 for your project?
Tell us your application and we will confirm the right variant, check stock, and provide a quote – usually within one business day.
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