Milesight UR35-L0GEU-P-W Industrial 4G Router with Wi-Fi and PoE

Milesight UR35-L0GEU-P-W industrial 4G router with Wi-Fi and PoE

The Milesight UR35-L0GEU-P-W (UR35-L0GEU-P-W) is a dual SIM industrial 4G LTE Cat 4 router with built-in 802.11b/g/n Wi-Fi and four 802.3af/at PoE output ports. It combines cellular connectivity, wired Ethernet, and wireless access in a hardened IP30 metal enclosure rated from -40 to +70 °C, making it a capable platform for M2M and IoT deployments where both wireless coverage and direct device powering are required from a single unit.

The UR35 runs on an ARM Cortex-A7 processor at 528 MHz with 128 MB RAM and 128 MB flash. Serial interfaces include RS232 and RS485 on a 3.5 mm terminal block, supported by galvanically isolated digital input and output. Industrial protocol support covers Modbus RTU/TCP gateway, DLMS/COSEM client for smart metering, and MQTT publish/subscribe. Remote management runs via DeviceHub, Milesight Development Platform, SNMP, TR-069, or the MilesightVPN platform. A Python SDK is embedded for secondary development.

Key features

• 4G LTE Cat 4 cellular: Up to 150 Mbps download / 50 Mbps upload via embedded modem with dual Mini SIM (2FF) slots and automatic failover between carriers.
• 4 x 802.3af/at PoE PSE outputs: Powers up to four connected devices directly from the router — up to 30 W per port, 60 W total; requires 48 V DC input.
• 802.11b/g/n Wi-Fi (2.4 GHz): Operates as access point or client; supports WPA2-PSK, WPA2-Enterprise, WEP, TKIP/AES; up to 15 simultaneous connections.
• 5 x Fast Ethernet ports: 1 x WAN and 4 x LAN at 10/100 Mbps; WAN port is configurable as a second LAN in cellular-only or Wi-Fi WAN deployments.
• RS232 + RS485 serial interfaces: Modbus RTU/TCP gateway, transparent TCP/UDP mode, DLMS/COSEM client, MQTT client; baud rates 300 bps to 230,400 bps.
• Galvanically isolated digital I/O: 1 x dry-contact digital input, 1 x wet-contact digital output (max 0.3 A at 30 V DC) on 3.5 mm terminal block.
• Full VPN suite: WireGuard, OpenVPN (client and server), IPsec (IKEv1/IKEv2, multiple clients and server), GRE, L2TP, PPTP, DMVPN, ZeroTier.
• Reliability features: Hardware watchdog, VRRP, dual SIM backup, automated WAN failover across cellular, Ethernet, and Wi-Fi.
• Wide power input: 9-48 V DC on 2-pin terminal block with surge and reverse polarity protection; 48 V required when PoE output is in use.
• Python SDK: Embedded for secondary development; extend or customise router behaviour without external hardware.

What is the Milesight UR35-L0GEU-P-W used for?

IP camera and access point installations

The four PoE output ports allow IP cameras, access points, or other 802.3af/at devices to be powered directly from the router, eliminating separate PoE injectors. This is well suited to remote CCTV enclosures, temporary site surveillance, or locations where a single cabinet houses both the router and connected IP devices. The Wi-Fi AP mode adds a local wireless network for tablets, handheld scanners, or maintenance laptops on site.

Smart metering and energy infrastructure

DLMS/COSEM client support makes the UR35 directly compatible with IEC 62056-compliant smart meters over RS232 or RS485. Data can be forwarded over cellular to a head-end system via MQTT or TCP. Dual SIM failover ensures meter polling continues when a primary carrier has an outage, which is a common requirement in AMI deployments and substation metering applications.

Industrial automation and SCADA connectivity

RS232 and RS485 serial ports with Modbus RTU to Modbus TCP gateway allow PLCs, RTUs, and SCADA equipment to communicate over a cellular WAN without firmware changes. Digital input and output enable event-triggered actions — a status change on the DI can trigger an SMS alert, MQTT publish, or digital output toggle. This suits pump stations, compressor monitoring, and remote substation telemetry.

Logistics and asset tracking without GPS

Where a fixed IP SIM is in use for inbound VPN access to a remote site, the UR35’s WireGuard or IPsec tunnel keeps the connection stable across SIM switches. The Wi-Fi client mode allows the router to connect to an existing site wireless network as a secondary WAN path, with cellular as primary or failover depending on link priority configuration.

Retail and vending machine connectivity

The compact 135 x 103 x 45 mm metal enclosure fits inside standard equipment cabinets. Serial ports connect to vending controllers, payment terminals, or POS equipment via RS232 or RS485. The dual SIM slots allow a primary commercial data SIM and a backup SIM on a different network. Event alarms can notify operators by SMS or email on network outages or DI state changes.

Pro tip

The PoE output on the UR35-L0GEU-P-W requires 48 V DC at the power input. Running the router at 9-30 V will power the router itself but the PoE PSE outputs will be inactive. If you are powering PoE devices, confirm your supply is rated at 48 V before connecting cameras or access points. Also note that the UR35 PoE is 802.3af/at standard — active PoE only. Passive PoE injectors or switches running at 12 V or 24 V are not compatible with the downstream ports.

Building a resilient cellular connection

The UR35-L0GEU-P-W supports three WAN paths: cellular (with dual SIM), Ethernet WAN, and Wi-Fi client mode. Link failover priority is configured in the web GUI and can switch automatically based on ping detection. Using SIM cards from two different mobile network operators removes single-carrier dependency. For sites with fixed infrastructure, pairing cellular with an Ethernet WAN connection gives full redundancy; cellular handles outages on the primary wired link. Adding a fixed IP SIM on at least one slot enables inbound VPN connections and remote access to field devices without port forwarding or dynamic DNS workarounds.

Frequently asked questions

Does the Milesight UR35 support dual SIM failover?

Yes. The UR35 has two Mini SIM (2FF) slots. SIM failover is configured via the Link Failover settings in the web GUI — you set the priority order and ping detection parameters. Failover is not automatic out of the box; it requires configuration in the management interface. Using SIMs from different mobile networks gives the best resilience against single-carrier outages.

What PoE standard does the UR35-L0GEU-P-W support?

The UR35-L0GEU-P-W provides 802.3af and 802.3at PoE PSE on all four LAN ports, up to 30 W per port and 60 W total. This is active PoE only. The router must be powered by a 48 V DC supply for the PoE outputs to work. Do not connect passive PoE devices or passive PoE injectors to these ports — the voltage levels are incompatible and will damage equipment.

What is the difference between the UR35 Wi-Fi and GPS variants?

Wi-Fi and GPS are mutually exclusive hardware options on the UR35. The front panel antenna connector is either a Wi-Fi RP-SMA port (on -W variants) or a GPS SMA port (on -G variants). The UR35-L0GEU-P-W has Wi-Fi and PoE but no GPS. If you need GPS/GNSS tracking with cellular connectivity, a different variant or a separate GPS module is required.

What SIM card format does the UR35 use?

The UR35 uses Mini SIM (2FF) format in both slots. This is the largest of the common SIM form factors and is less common in recent consumer devices. Most IoT and M2M SIM cards are available in Mini SIM or multi-cut formats. Check the SIM format before ordering — a Nano or Micro SIM without an adapter will not fit. For reliable static IP connectivity, a fixed IP SIM card is recommended for remote access deployments.

Does the UR35 support VPN tunnels?

Yes. The UR35 supports WireGuard, OpenVPN (multiple clients and server simultaneously), IPsec (IKEv1 and IKEv2, multiple clients and server), GRE, L2TP, PPTP, DMVPN, and ZeroTier. All VPN tunnels are configured via the web GUI. For remote access to field devices on standard SIM cards behind carrier-grade NAT, a fixed IP SIM or a VPN server with a public IP is required to establish inbound connections.

How is the UR35 managed remotely?

The UR35 supports remote management via Milesight DeviceHub, Milesight Development Platform, MilesightVPN, SNMP v1/v2c/v3, TR-069, and SMS commands. DeviceHub allows bulk configuration, firmware updates, and status monitoring across multiple deployed units. The MilesightVPN platform provides encrypted remote access to devices on the LAN side of the router without requiring a fixed IP SIM, though a fixed IP SIM removes this dependency entirely.

Related products and further reading

The UR35-L0GEU-P-W is one of four UR35 variants stocked by The Router Store. The UR35-L0GEU-P is the PoE-only version without Wi-Fi. The UR35-L0GEU-W adds Wi-Fi without PoE. The UR35-L0GEU is the base model. For fixed IP SIM connectivity to enable remote access, see our fixed IP SIM cards. For external antennas suited to enclosure installations, see our 4G antenna range.