RLTK451 5-Port 4G Industrial Router

Rugged industrial router with multi-WAN & failover, full VPN suite (OpenVPN/IPsec/L2TP/GRE), and serial interfaces for secure PLC/HMI connectivity. Built for demanding sites, it adds an easy web UI, remote management and auditability for always-on operations.

Connectivity & Interfaces

Multi-WAN Ethernet with configurable LAN/WAN, optional Wi-Fi, and serial ports to fit diverse OT networks.

VPN & Security

OpenVPN, IPsec, L2TP and GRE tunnels with firewall/ACL and DoS protection keep access secure and compliant.

Industrial Design & Reliability

Fanless metal enclosure, wide-temperature operation and watchdog for reliable 24/7 service at the edge.

Key Features

RLTK451 is built to keep industrial sites online and securely reachable. With multi-WAN Ethernet (seamless failover), full VPN suite, optional Wi-Fi, and RS-485/RS-232 bridging, you can connect to PLCs/HMIs in minutes—without a site visit.

 

  • Multi-WAN & Failover — Keep sites online with health checks and auto-reconnect.
  • Full VPN Suite — OpenVPN / IPsec / L2TP / GRE for secure, interoperable tunnels.
  • Industrial-grade Ethernet — Configurable LAN/WAN; optional Wi-Fi for field access.
  • Serial & Protocol Bridging — RS-485/RS-232 and Modbus RTU↔TCP for legacy assets.
  • Rugged & Fanless — Metal enclosure, wide-temp operation, surge/ESD protection.
  • Remote Management — Web/SSH/SNMP control, logging & alarms for fleet operations.

Technical Highlights

Compact, rugged industrial router with multi-WAN Ethernet (configurable LAN/WAN), optional 2.4 GHz Wi-Fi, and RS-485/RS-232 for secure PLC/HMI remote access and protocol bridging (e.g., Modbus RTU↔TCP). Built for industrial IoT, it provides seamless WAN failover with health-checks, plug-and-play setup via a simple web UI, and IT-grade controls—OpenVPN/IPsec/L2TP/GRE, firewall/ACL, NAT/port-forwarding, DHCP/VLAN, and logging/SNMP/SSH—while the fanless metal enclosure, wide-temperature rating, surge/ESD protection, and a hardware watchdog keep it reliable 24/7 in harsh sites.

Ethernet
Multi-WAN with configurable LAN/WAN; 10/100 (or higher) Mbps
VPN / Security
OpenVPN, IPsec, L2TP, GRE; firewall/ACL, DoS protection
Serial
RS-485 / RS-232; Modbus RTU↔TCP bridging
Wi-Fi (optional)
2.4 GHz AP/Hotspot (if configured)
Power
9–36 V DC (typical low power), reverse-polarity protection
Environment
Wide temperature; fanless metal enclosure; DIN-rail/panel mount
Reliability
Hardware watchdog; surge/ESD/EFT protections
Compliance
CE/FCC (EMC) and related standards

Ports & I/O

Snapshot of the physical interfaces on RLTK451.

  1. Ethernet: Multiple RJ45 ports — WAN (switchable) + LAN.
  2. Serial: RS-485 / RS-232 terminal; Modbus RTU↔TCP.
  3. Wi-Fi (optional): 2.4 GHz AP/Hotspot.
  4. Power: 9–36 V DC input; DIN-rail/panel mounting.
  5. Indicators: Power, link/activity, VPN/status LEDs; reset button.

Connect It to RoltekConnect Cloud

Pair RLTK451 with RoltekConnect Cloud to onboard devices into a zero-trust tunnel. Apply role/time-based access, review session logs, and push configs/firmware remotely.

Use Cases

Remote PLC Maintenance

Monitor, troubleshoot and program PLCs/HMIs without a site visit—secure, auditable access via a zero-trust tunnel.

External Party Access Governance

RoltekConnect Cloud converts external parties access into a temporary, scoped, and fully auditable request → approve → operate flow, eliminating operational risk.

3. use case

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