Which Yifan router is best for SCADA and industrial IoT applications?

The NR100 V2 (5G) is Yifan's flagship industrial router for SCADA and IIoT, featuring RS232/RS485/CAN bus, optional dual SIM, -35°C to +75°C operation, and Wi-Fi 6. For 4G LTE SCADA, the YF355 and R100 are widely deployed with serial port support and Modbus TCP gateway.

Do Yifan routers support RS232 and RS485 serial ports for PLC/RTU integration?

Yes. Yifan industrial routers — including NR100 V2, YF355, YF336, R100, and R200 — include RS232 and RS485 serial ports that connect directly to PLCs, RTUs, flow meters, and other serial SCADA devices, enabling transparent serial-to-cellular data transmission.

What operating temperature range do Yifan industrial IoT routers support?

Yifan industrial routers operate from -35°C to +75°C standard, with some models rated to -40°C. This exceeds typical industrial automation requirements and ensures reliable operation in outdoor cabinets, desert environments, and cold-climate installations year-round.

Does Yifan support Modbus TCP gateway for IIoT deployments?

Yes. Yifan routers support Modbus RTU-to-TCP gateway conversion, allowing Modbus serial devices to communicate over cellular IP networks to cloud SCADA platforms. This eliminates the need for separate protocol converters in most IIoT installations.

What VPN options are available for securing industrial IoT data?

Depending on the model, Yifan industrial routers support IPsec, OpenVPN, L2TP, PPTP, and GRE; the YF355 and R350 also list WireGuard and ZeroTier. For SCADA deployments, IPsec site-to-site tunnels between field sites and the control centre are the most common choice.

Can Yifan routers support dual SIM for SCADA redundancy?

Yes. Dual SIM with automatic failover is a core feature of Yifan industrial routers. If the primary carrier loses signal, the router instantly switches to the backup SIM — maintaining PLC/RTU communication without operator intervention, which is essential for unattended SCADA sites.

How are Yifan industrial IoT routers managed remotely?

Yifan's RMP Platform provides centralised management for industrial deployments — OTA firmware updates, remote configuration, bulk configuration, and real-time alert monitoring. SNMP is also listed on selected models; check each datasheet.

Where can I purchase Yifan routers for large-scale IIoT projects?

Yifan supplies directly to system integrators and OEM customers. For large-scale IIoT projects, contact sales@yifanrouter.com with your quantity, application, and connectivity requirements. Volume pricing and custom configuration are available.

Industrial IoT and SCADA Connectivity

99.9%

Network Uptime

-40°C

Min. Operating Temp

15kV

ESD Protection

VPN Protocols

Secure Cellular Backhaul for Industrial Control Systems

Industrial facilities rely on SCADA systems, PLCs, RTUs, and sensors distributed across large sites — often in locations with no wired connectivity. Yifan industrial routers and gateways provide the secure cellular backbone that keeps your operational technology (OT) networks running continuously, with native RS232/RS485 support for direct integration with legacy industrial devices.

The Challenge

Industrial IoT and SCADA deployments present four critical connectivity challenges that consumer-grade equipment simply cannot solve:

Remote Site Connectivity

SCADA RTUs and sensors at remote substations, pipelines, and pumping stations have no fiber access. Cellular is the only viable backhaul.

Legacy Protocol Support

Existing PLCs and RTUs communicate via RS232/RS485 serial. New connectivity must bridge legacy devices to modern IP networks without replacing hardware.

OT Network Security

Industrial control networks must be isolated from public internet while enabling secure remote access for engineers and management systems.

Extreme Environments

Industrial sites expose equipment to temperature extremes, vibration, dust, moisture, and high-voltage interference that destroys consumer hardware.

Our Solution

Yifan industrial routers and gateways are purpose-engineered for OT environments, combining ruggedized hardware with comprehensive protocol support and enterprise-grade security. Two models are widely deployed in SCADA and Industrial IoT applications:

Serial-to-Cellular / SCADA Backhaul

YF Series 4G Industrial Routers

RS232 + RS485 serial ports enable direct connection to PLCs, RTUs, and flow meters. Dual SIM failover keeps SCADA data flowing even during carrier outages.

✓ RS232 + RS485 — direct PLC/RTU integration
✓ IPSec / OpenVPN / WireGuard VPN tunnels
✓ Dual SIM auto-failover
✓ DIN-Rail mounting, -40°C to +75°C
✓ 15KV ESD protection on all ports

View 4G Routers →

Edge Computing / Protocol Gateway

5G/4G Industrial Gateways

Built-in Modbus-to-MQTT protocol conversion bridges legacy industrial devices to cloud platforms. Edge computing runs local logic without cloud dependency.

✓ Modbus RTU/TCP → MQTT conversion
✓ Edge computing — Docker support
✓ Multi-protocol IoT support
✓ 5G NR + 4G LTE dual-mode
✓ -35°C to +75°C industrial grade

View Industrial Gateways →

How It Works

Each Yifan router creates a secure encrypted cellular tunnel between your field devices and the control center:

PLC
RTU

Field Device

RS232/RS485

→

4G/5G
ROUTER

Yifan Router

VPN Encrypted

→

4G/5G
CELL

Cellular Network

Dual SIM Failover

→

SCADA
HMI

Control Center

Real-time Data

Why Choose Yifan

15+

15+ Years Experience

Deployed in 120+ countries across energy, oil & gas, water treatment, and manufacturing since 2009.

FCC
CE

FCC & CE Certified

Full compliance for US and EU markets. RoHS and REACH certifications included with every product.

24/7
Mgmt

Remote Management

RMP platform provides centralized monitoring, OTA firmware updates, and alerts — eliminating costly site visits.

Frequently Asked Questions

Which serial protocols are supported?

Yifan routers support RS232 and RS485 serial interfaces, compatible with Modbus RTU, DNP3, and proprietary PLC protocols from Siemens, Allen-Bradley, Schneider, and others.

How is OT network security maintained?

IPSec IKEv2 and OpenVPN tunnels create an isolated, encrypted channel between field devices and the control center. Firewall rules and ACLs prevent unauthorized access to the OT network.

What happens if the primary SIM loses signal?

Dual SIM failover automatically switches to the backup carrier within 90 seconds of link loss detection, ensuring SCADA data continues to reach the control center without manual intervention.

Can I manage hundreds of remote routers centrally?

Yes. The RMP cloud platform provides centralized monitoring, configuration management, OTA firmware updates, and real-time alerts for any number of deployed devices from a single dashboard.