Gosuncn RichLink Unveils the GR521 4G Industrial Router
SHENZHEN, CHINA – August 29, 2025 – Gosuncn RichLink today announced the launch of the GR521, a new compact industrial-grade 4G cellular router. Designed for demanding environments in Europe, Asia-Pacific, and Latin America, the GR521 provides stable, reliable, and efficient connectivity for industries like smart metering, surveillance, and retail. With its robust performance and rich feature set, the GR521 offers a dependable, easy-to-deploy communication solution for industrial IoT applications.
Industrial-Grade Reliability for Extreme Conditions
The GR521 features a rugged, industrial-grade design with a wide operating temperature range of -30°C to 75°C. This ensures stable performance in harsh environments, making it an ideal choice for outdoor deployments, industrial sites, and other scenarios that demand high device stability.
Multi-Mode Connectivity for Diverse Networks
Supporting LTE Cat.4 with download speeds up to 150Mbps and upload speeds of 50Mbps, the GR521 is compatible with 4G bands in EMEA and Latin America. It also provides 3G/2G fallback, guaranteeing stable data transmission across different network conditions and meeting a wide range of connectivity needs.
Innovative Architecture Enhances Performance and Stability
The GR521 uses a proprietary Single Modem technology architecture, which significantly reduces the number of components and simplifies procurement. Its compact design and a stable, reliable software system optimize space usage, and the proven architecture has been validated through large-scale deployments, ensuring long-term operational stability.
Seamless Connectivity with Smart Failover
With WAN Failover and dual SIM capabilities, the GR521 automatically detects and switches to an available backup connection, whether cellular or Ethernet. The device supports two SIM cards and can automatically select the one with the best network conditions. A built-in SIM lock security mechanism also ensures data integrity and security.
Compact Design for Easy Installation
Measuring just 100×80×29.3mm and weighing only 183g, the GR521 is highly integrated and easy to install in confined spaces. This compact design allows for flexible deployment in various industrial settings, from small equipment cabinets to distributed surveillance points.
Versatile Interfaces for Broad Application
The GR521 is equipped with dual Ethernet ports, a DB9 (RS485) industrial serial port, I/O ports, and a 4-pin industrial DC power socket. These rich communication interfaces provide expanded possibilities for applications in industrial automation, smart grids, and remote monitoring.
Secure Communication with Comprehensive Protocol Support
The GR521 supports various network protocols, including TCP, UDP, and DHCP, as well as routing protocols like Static Routing and Policy Routing, ensuring efficient data transmission. It also integrates firewall functions like NAT and DMZ and supports PPTP/L2TP/GRE/IPSec VPN protocols, offering multiple layers of data security.
Efficient Remote Management
With support for remote management protocols like HTTP, SSH, SNMP V2/V3, and FOTA, the GR521 can be managed remotely via the RichLink Cloud or a customer's own cloud platform. An intuitive WebUI simplifies local management, while a series of status indicator lights provide a clear overview of the device's operational status.
Rich Accessories for Convenient Deployment
To facilitate installation in various scenarios, the GR521 comes with a wide range of accessory options, including:
1.5M/3M LTE cellular magnetic SMA antennas
4-pin to DC barrel socket adapter
Power cable with 4-way screw terminals
DIN rail kit
DB9 cable
18W power adapter
LTE antenna and Ethernet cable
The launch of the GR521 enriches Gosuncn RichLink's family of industrial routers, providing a reliable, efficient, and easy-to-deploy connectivity solution for industrial users in Europe, Asia-Pacific, and Latin America. With its outstanding performance and rich features, the GR521 will help customers achieve more efficient operations and management in the industrial IoT era.
Rich Link to the Colorful World！
About Gosuncn RichLink (www.rich-link.com): Gosuncn RichLink Technology Co., Ltd., is an IoT subsidiary of GOSUNCN Group (300098), focusing on cellular IoT technology, providing Telematics products and Cellular IoT terminals. Through 10 years of technological accumulation and business expansion, the company continues to provide innovative solutions and applications for global MNOs, TSPs, as well as customers in industries such as transportation, logistics, and smart metering.