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Overview

RLTK421 is a high-performance industrial 4G wireless router with serial port and Data Terminal Unit (DTU) functionality. By leveraging public wireless networks, it provides users with an integrated solution combining an industrial 4G router and DTU.

This product features a high-performance CPU with a frequency of up to 580 MHz. Based on its various hardware interfaces and powerful software capabilities, users can quickly build their own networks. It is widely used in the Internet of Things (IoT) and M2M industries, providing reliable data transmission networks for smart grids, personal healthcare, smart homes, self-service terminals, industrial automation, agricultural environmental monitoring, municipal services, and other applications.

Key Features​

Stable and Reliable​

  • Industrial-grade design, metal enclosure, IP30 protection rating
  • Wall-mount and DIN-rail mounting options for easy installation
  • Reverse voltage protection and wide voltage input range
  • Suitable for various scenarios with DIN-rail and panel mounting
  • ESD, surge, and EFT protection
  • Hardware watchdog and link detection mechanism for self-recovery from unexpected failures, ensuring system stability

Flexible Network Architecture​

  • Supports 4G networks and is backward compatible with 3G/2G
  • Supports automatic network detection and switching between 4G/3G/2G, compatible with APN/VPDN cards
  • Simultaneous support for wireless (4G) and wired networks with multi-network failover
  • Supports 2.4 GHz Wi-Fi, allowing flexible selection between wired and wireless networking
  • Supports VPN protocols (PPTP, L2TP, IPsec, OpenVPN, GRE) with encryption

Advanced Functions​

  • Supports remote monitoring, remote firmware upgrades, email alerts, and remote access to the built-in web interface
  • Supports serial-to-Ethernet communication and integrates basic router and DTU functions for various application scenarios
  • 1 × 10/100 Mbps LAN port and 1 × WAN/LAN port
  • Supports WLAN wireless networking and includes multiple LED indicators
  • Supports simultaneous wired and wireless connections with multi-network redundancy
  • Supports automatic APN management, system switching, SIM information display, and APN/VPDN network cards
  • Supports DDNS, PPPoE, DHCP, and static IP configuration
  • Supports firewall, NAT, whitelist/blacklist, SNAT, and DNAT
  • Supports traffic management and bandwidth control based on interface, IP address, or MAC address
  • Supports SSH, Telnet, and web-based configuration
  • Supports connection to our remote monitoring platform for remote monitoring, upgrades, and configuration
  • Supports hardware reset and system stability through a hardware watchdog