The SR700 Industrial 4G Router Experience:Dual SIM, Always Online

                      

As an IT professional, a stable and reliable network connection is crucial for me. Today I’m introducing the SR700 4G  industrial router – with it, my network is finally invincible.
The biggest feature of the SR700 router is dual SIM support. The back of the unit has two SIM card slots that can hold two 4G data SIMs simultaneously, connecting to networks from two carriers. When one network goes down, the device automatically switches to the other network, achieving seamless backup and true always-online connectivity. This is simply a godsend for us.
Most 4G routers on the market, especially industrial ones, have a fairly rugged exterior design. But the Xincheng Yilian SR700 stands out from the pack. The metal chassis and streamlined shape, coupled with the high-tech black and green color scheme, looks high-end and stylish no matter how you look at it.

In terms of hardware, the SR700 uses a high-performance industrial-grade 4G module supporting mainstream 4G bands at home and abroad, with downlink speeds up to 150 Mbps and uplink speeds up to 50 Mbps. It has 128MB RAM + 16MB flash memory and runs the OpenWRT open source system for stable operation and rich functionality. Ports include 1 WAN + 4 LAN ports, 1 console port, 2 SIM slots, 1 USB port, and 1 reset button. LEDs show power, system, signal strength, SIM, and network connection status at a glance.
The dual SIM feature of the SR700 not only enables seamless 4G backup, but also saves you a bundle on data fees. I travel frequently for work, and used to have to buy a local data SIM in each city I visited, using it once then tossing it – both inconvenient and wasteful. Since using the SR700, I load it up with SIMs for several regions at once. Wherever I go, I just power it on and I’m online. I can economize or splurge on data as I please. It’s flexible and convenient, handling China Mobile, Unicom and Telecom across the board.
Besides 4G, the SR700 also shines in wired connectivity. The 4 LAN ports are all gigabit with built-in 1.5KV electromagnetic isolation, so network cables can be connected directly without fear of lightning strikes. If you find yourself short on Ethernet ports, the SR700 also supports 2.4G WiFi to provide wireless access to nearby devices. With wired and wireless working in tandem, setting up a LAN is a snap. The WAN port auto-negotiates DHCP/PPPoE/static IP and other access methods. The 3 types of connections can switch intelligently for mutual backup and uninterrupted network access.

On the software side, the SR700 is deeply customized based on OpenWRT, with mind-blowingly comprehensive functionality. Support for various industrial protocols like Modbus and MQTT, as well as industry standards like Environmental 212, is all there – if you can think of it, it supports it. Network security is paramount for industrial-grade devices, and the SR700 doesn’t skimp here either. It has a full-featured stateful firewall, DoS attack prevention, access control, URL filtering, port mapping, VPN, and other security features to keep your data worry-free.
For day-to-day maintenance, the SR700 is similarly user-friendly, supporting web UI, SSH, Telnet, serial console and other configuration methods – always one that suits you. Device and system logs can be viewed anytime, network traffic monitored in real-time, and firmware upgraded online. If managing individual units still seems like a hassle, Xincheng Yilian also provides the Star Cloud Network Management platform to centrally manage SR700 devices en masse, with one-click configuration, batch upgrades, and device status at your fingertips.

All in all, the Xincheng Yilian SR700, with its dual SIM and always-online features, has made my mobile office life incredibly smooth. Super strong signal coverage, high-speed stable network transmission, comprehensive industrial protocol support, complete security protection, and convenient management tools all highlight its professional quality as an industrial-grade device. The exterior design is also a bright spot, delivering both business and fashion sense. Whether you’re a digital nomad, freelancer or startup team, the SR700 is an invaluable tool. It keeps you online anytime, anywhere for efficient communication and easy handling of any network issues that crop up at work or in life. If you also frequently tear your hair out over dropped connections, consider picking up an SR700 and let it keep your network up and running.