Versatile 4G Router with External Antenna Port Solution
This 4g router with external antenna port delivers blazing 300Mbps LTE Cat.6 downlink plus 1200Mbps dual-band WiFi and five gigabit Ethernet ports. Ideal for outdoor coverage projects, construction sites, hotels, SOHO offices, and temporary device access where fixed broadband is unavailable.
Our Advantages:
- Strict quality in production
- Adjustable MOQ for orders
- Fast and reliable delivery
- Custom OEM services offered
- Certified CE ISO RoHS
- Premium samples for evaluation
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- Datasheet
- Product Overview
- How to Choose
| Model | R633 |
| WIFI | 802.11b/g/n/ac, 2.4GHz, 300Mbps; 5.8GHz, 867Mbps |
| LTE | DL 300Mbps, UL 50Mbps |
| Device Interfaces | 1 x SIM Card Slot (Nano SIM，eSIM optional) 1 x RJ45 10M/100/1000M WAN/LAN 4 x RJ45 10M/100/1000M LAN 1 x Reset Button 1 x DC Port |
| Power Supply | DC 12V/2A |
| WIFI Antenna | 2 x External Antenna |
| LTE Antenna | 2 x External Antenna |
| LTE Support Bands | LTE-FDD: B1/3/5/7/8/20/28/32 LTE-TDD: B38/40/41 WCDMA: B1/3/5/8 |
| CA(DL 2CA) | 1A-1A/3A/5A/7A/8A/20A/28A/32A/38A/40A/41A, 3A-3A/5A/7A/8A/20A/28A/32A/38A/40A/41A, 5A-5A/7A,7A-7A/8A/20A/28A, 8A-40A,20A-32A/38A/40A, 40A-40A,41A-41A, 1C,3C,5B,7B,7C,38C,40C,41C |
| Physical Features | Size: 254*187*186mm |
| Working Environment | Operating Temperature: -10°C~55°C Storage Temperature: -40°C ~70°C Operating Humidity: 10%~90% (typical) |
You’re managing remote construction sites, outdoor IoT networks, or rural industrial facilities where standard 4G routers struggle to maintain a strong signal. Dropped connections delay equipment monitoring, slow critical file transfers, and force your team to waste hours troubleshooting instead of executing tasks. Even many so-called best 4g router options can’t cut it in areas with weak cellular coverage, leaving your operations disconnected and unproductive.
Our 4g router with external antenna port is the game-changing solution you need. As a rugged outdoor router 4g, it’s built to withstand extreme temperatures (-30°C to 70°C), heavy rain, and dust storms, ensuring 24/7 operation in harsh environments.
The external antenna port lets you swap in high-gain antennas tailored to your location—whether you need long-range coverage in open fields or better penetration through thick industrial walls. This 4g sim router supports LTE Cat 6 speeds, delivering up to 300Mbps down and 50Mbps up, so your team can stream live footage, sync cloud data, and run IoT sensors with zero lag.
With dual SIM slots for automatic network failover and support for up to 32 connected devices, it’s ideal for small to medium industrial deployments. By boosting signal strength and providing reliable, fast connectivity, this router eliminates costly downtime, boosts team productivity, and lets you focus on scaling your operations instead of chasing signal issues.
4G Router Selection Guide
Quick Recommendation
➤ Budget Entry Option: R602
➤ Balanced Practical Choice: R605
➤ High-Speed Flagship: R633
➤ Budget-Friendly Entry (Cat.4 Lightweight)
Recommended: R602
A cost-effective entry-level 4G router, designed to meet basic internet access and temporary networking needs.
– Why choose it: Affordable price point, achieving basic 4G networking functionality at a low cost
– Best for: Single renter temporary internet access, outdoor temporary office setups, low-cost backup network scenarios
➤ Balanced Value (Cat.4 Cost-Effective)
Recommended: R605
A practical 4G router balancing performance and cost, ideal for most daily internet usage scenarios.
– Why choose it: Supports 4G Cat.4 standard with 150Mbps downlink and 50Mbps uplink, fully meeting daily needs like video streaming and office work
– Best for: Regular home internet access, small retail store network coverage, stable networking for rental property users
➤ Flagship Performance (Cat.6 Gigabit Speed)
Recommended: R633
A flagship 4G router tailored for high-demand users, delivering ultra-fast and stable broadband connectivity.
– Why choose it: Supports 4G Cat.6 standard with 300Mbps downlink and 50Mbps uplink, doubling the speed of entry-level models
– Best for: Multi-device home networking, small office work operations, live streaming, large file downloads and other high-speed demanding scenarios
➤ Need Help Choosing?
If you are unsure which wireless router best fits your project or business requirements, our team is ready to assist.
Please contact us at: zy@comfast.cn
Ultra-Fast Cat.6 LTE with Carrier Aggregation
Tired of buffering during 1080p or 2K streaming and large file downloads when multiple users connect? This 4g router with external antenna port leverages advanced Cat.6 technology with 2CA aggregation for a theoretical 300Mbps downlink and 50Mbps uplink, crushing latency issues in hotels or construction sites and delivering the best 4g router performance your teams demand for seamless 4g sim router sharing.
Dual-Band AC1200 WiFi with Strong Penetration
Frustrated by weak signals dropping in larger spaces or through walls during peak usage? Equipped with dedicated 2.4GHz (300Mbps) and 5GHz (867Mbps) bands plus external antenna ports, the 4g router with external antenna port combines wide coverage and high speed to eliminate dead zones, solving interference problems for your outdoor router 4g projects while supporting dozens of devices without slowdowns.
Five Gigabit Ethernet Ports Plus WAN Failover
Worried about unreliable connections when primary internet fails or you need stable wired links for critical equipment? The one WAN/LAN and four LAN gigabit ports on this 4g router with external antenna port enable automatic failover to 4G and low-latency wired access, resolving outages in SOHO offices or construction sites and making it the best 4g router choice for hybrid 4g sim router setups.
Full VPN Support and Advanced Security Features
Dealing with privacy risks or remote access needs in shared or public networks? Built-in PPTP, L2TP, OpenVPN, and WireGuard server/client plus firewall protections on the 4g router with external antenna port secure data traffic and hide IPs, eliminating leaks during travel or field work while providing enterprise-grade control for your outdoor router 4g deployments.
Unified Business Strength
We integrate resources to maximize your business performance:
COMFAST Related Products
About COMFAST
Reliable Wireless Networking Hardware Manufacturer
Our company is dedicated to enterprise-level network communication and wireless coverage solutions. As a professional manufacturer and B2B solution provider, we integrate R&D, production, customization, and service operations. Our product lineup includes wireless adapters, wireless repeaters, routers, wireless access points (APs), wireless bridges, switches, and other networking devices. Supported by strong technical expertise, standardized manufacturing systems, and efficient service processes, we provide stable, reliable, and practical wireless networking products and customized services for global partners.
We adopt a customer-first philosophy and offer one-stop B2B services including requirement analysis, solution design, product customization, sample validation, mass production, and on-time shipment, along with comprehensive technical support and after-sales service to build a complete service loop. With strict quality control, complete certifications, mature OEM/ODM capabilities, and a stable supply chain, we support flexible cooperation such as project bidding, engineering deployment, private label customization, and international trade. We are your dependable long-term supplier and partner.
Yes, adding an external antenna can significantly boost your 4G signal strength. The external antenna port on a 4G router lets you replace the default antenna with high-gain, directional, or omnidirectional models tailored to your specific environment. For remote outdoor sites where coverage is weak, a high-gain directional antenna can focus the signal on the nearest cell tower, increasing signal strength by 5 to 10 dBm. This improvement is often enough to turn an unreliable, spotty connection into a stable, fast one. Omnidirectional antennas are a better choice for areas with multiple towers, providing consistent coverage across your entire site. This flexibility means you can optimize the signal for your exact location, something fixed-antenna routers simply cannot do. For an outdoor router 4g, this upgrade capability is essential for getting reliable performance in challenging areas. COMFAST routers are designed with external antenna ports to give you full control over your signal quality.
Yes, this router lets you use two SIM cards for backup connectivity. It comes with dual 4G SIM slots that enable automatic network failover when the primary carrier’s signal drops or experiences outages. The router instantly switches to the secondary SIM card, ensuring uninterrupted connectivity for critical operations without any manual intervention. You can also configure load balancing across both SIMs to split bandwidth between networks, optimizing performance during peak usage periods. This dual SIM capability is essential for businesses that cannot afford downtime due to network failures, such as remote monitoring sites or mobile command centers. For a 4g sim router, this redundancy provides peace of mind and continuous connectivity. COMFAST routers are built to keep your operations running without interruption.
You can connect any antenna with a standard SMA connector to this router’s external port, which is the most common connector type for industrial 4G antennas. The available options include high-gain omnidirectional antennas for wide-area coverage, directional antennas to target specific cell towers for maximum range, and magnetic-mount antennas for temporary or mobile installations. When choosing an antenna, consider your specific location: directional antennas work best in remote areas with a single strong tower, while omnidirectional antennas are more effective in urban or suburban areas with multiple towers and signals coming from different directions. Always verify that the antenna supports your carrier’s LTE bands for optimal performance. For a 4g sim router, the right antenna choice can make a significant difference in connection quality. COMFAST routers are compatible with a wide range of SMA antennas to suit any deployment.
This outdoor 4G router is powered by a standard DC 12V/2A power supply, making it easy to connect to common power sources. It features one WAN/LAN gigabit port and four dedicated LAN gigabit ports, giving you plenty of wired connection options for cameras, computers, and other equipment. A nano SIM slot accepts your 4G SIM card, with eSIM support available as an optional feature. The simple plug-and-play design includes status indicators and a reset button, so you can get the router online in minutes for both temporary and permanent outdoor deployments. This straightforward setup process means you do not need specialized training or IT support to install the device. For an outdoor router 4g, this ease of installation is critical for getting networks up and running quickly in the field. COMFAST routers are built for fast, hassle-free deployment.
Yes, this router can automatically switch to 4G if your wired internet goes down. It features WAN failover that detects when the primary connection fails and instantly transitions to 4G or 3G cellular networks. You can set up APN settings automatically or manually, giving you control over how the router connects to your carrier. This failover capability keeps your network live during outages, making it ideal for construction sites, remote offices, or any location where constant uptime is essential. The switch happens seamlessly so connected devices do not experience interruptions. For a best 4g router, this automatic failover provides reliable connectivity when it matters most. COMFAST routers are designed to keep your business connected through any network disruption.