【Built-in 4G LTE Module】 With a standard SIM card slot that supports the 4G LTE network. It can move into 4G LTE wireless network if the Ethernet Internet fails, in order to ensure constant data transmission in the critical facilities. (Not support Verizon Network in the US)

The GL-X300B Collie is an industrial-grade 4G LTE gateway built for environments where network reliability isn’t optional. With its built-in 4G LTE module and standard SIM slot, it automatically switches to cellular when your wired connection drops, keeping critical systems online without manual intervention. The dual external antennas ensure strong signal reception even in challenging locations, though note that Verizon networks aren’t supported in the US.

What sets this gateway apart is its industrial DNA. The Qualcomm QCA9531 chipset delivers proven stability in demanding applications, while the hardware watchdog actively monitors system health and triggers automatic resets if issues arise. The aluminum alloy enclosure handles temperature extremes and rough conditions that would sideline consumer-grade equipment. Wall-mounting options and compact dimensions make installation straightforward in tight industrial spaces.

Who Is This For?

This gateway targets IoT developers, industrial automation engineers, and businesses running remote monitoring systems. If you’re managing equipment in warehouses, manufacturing facilities, or field installations where downtime costs money, the X300B provides the failover protection you need. The OpenWrt operating system gives developers full customization access, while support for 30+ VPN providers including OpenVPN and WireGuard addresses security requirements. The AT command support and signal strength monitoring through the admin panel simplify troubleshooting and configuration for technical teams.

Bottom Line

The GL-X300B delivers industrial-grade reliability with developer-friendly flexibility. The automatic 4G failover, hardware watchdog, and rugged construction justify the investment for critical applications where network interruptions aren’t acceptable. The OpenWrt foundation and extensive VPN support make it particularly valuable for secure IoT deployments. Just confirm your carrier compatibility before purchasing, and be aware the 2.4GHz-only WiFi limits wireless performance compared to dual-band alternatives.

  • Built-in 4G LTE Module With a standard SIM card slot that supports the 4G LTE network. It can move into 4G LTE wireless network if the Ethernet Internet fails, in order to ensure constant data transmission in the critical facilities. (Not support Verizon Network in the US)
  • Industrial Hardware Qualcomm QCA9531 chipset provides stable performance, it is commonly used within the industry, which is perfect for industrial users to avoid breakdown. The Built-in hardware watchdog ensures the stability. Its dedicated hardware that can detect and trigger a processor reset if necessary.
  • Open Source & Secure OpenWrt pre-installed. Perfect for developers or IoT integration development. It supports 30+ VPN service providers, including OpenVPN & WireGuard.
  • Compact Design Its aluminum alloy shell, optional wall-mounted design, and wide range of operating temperature are designed for easy installation, storage, and operation in tough industrial environments.
  • Easy Configuration Supports AT command, manual/automatic dial number, and signal strength checking in our new admin panel for better management and configuration.