Skywire® Global CAT 4 Embedded Modem


NimbeLink, a global leader in embedded cellular modem technology and asset tracking solutions, has introduced the Skywire® 4G LTE CAT 4 WW modem. This Skywire modem leverages Category 4 technology. The NL-SW-LTE-TC4WWG is ideal for delivering fast reliable cellular connectivity to products with applications World Wide. The modem supports GNSS, dual SIMs, a single SKU for both AT&T / Verizon networks, integrated TCP/IP stacks, plus is AT&T’s FirstNet (Band 14) capable.

Skywire embedded modems dramatically reduce the cost, risks and timelines of IoT product development. With known-good RF engineering and fully validated software, Skywire allows you to focus on your application and not engineering cellular radios. Standardized connectivity gives you flexibility to update and alternate radios for new geographies, carriers and technologies. Further, our embedded modems are “End-Device Certified”, meaning your end-product will not need to go through the complex process of carrier certification. This is critical for the first release of your product and each iteration as you obtain market feedback. Skywire modems significantly reduce time-to-market and are ideal for product development through large-scale production. All Skywire modems are patented and backed by industry leading documentation and expert-level product support.

Skywire FAQs
Skywire Modems Comparison Chart

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  • Small Skywire Form-Factor
  • 4G LTE Category 4 with 3G fallback*
  • U.FL Antenna ports for easy antenna integration
  • Band 14 support – FirstNet on AT&T’s network
  • Dual SIM support with integrated solder down SIM and external 3FF SIM card slot
  • GNSS support for GPS, Glonass, Beidou, Galileo, and QZSS
  • Multi-carrier support on a single device
  • Skywire family pin compatibility
  • RoHS compliant
  • Development kits available
  • Longest Network Life
  • CAT 4 LTE Speeds (Up to 150 Mbps down/ 50 Mbps up)
  • Global LTE coverage with 3G fallback
  • Improved reception with RX diversity
  • 8 Band LTE support
  • Integrated GNSS support
  • Easy to integrate – pin compatible with all Skywire modems
  • Bundled Data Plan Available
  • Throughput: Download: LTE: 150 Mbps | HSPA+: 42.0 Mbps | Upload: LTE: 50 Mbps | HSPA+: 5.76 Mbps
  • Active Cell: TBDmA
  • Average: TBDmA
  • Peak: TBDmA
  • Idle: TBDmA
  • Sleep: TBDmA
  • Input Voltage: 3.4V-4.2V
  • I/O Voltage: 1.8V-5.5V
  • Temperature Range: -40º to 85ºC
  • Dimensions: 29.9mm x 34.4mm x 10.5mm
  • RoHS compliant

Deployable Region



AT&T, Orange, Telstra, Telus, T-Mobile, Verizon, Vodafone, and more



FDD B1[2100], B2[1900], B5[850], B7[2600], B8[900], B9[1800], B12[700], B13[700], B14[700], B18[850], B19[850], B20[800], B25[1900], B26[850], B28[700]


B1[2100], B2[1900], B3[1800], B5[850], B8[900], B19[850]


GSM850, EGSM900, DCS1800, PCS1900

Confidently Move Remote Data to the Cloud

Skywire Cellular Embedded Modems are the fastest way to get cellular connectivity.

Development Kits

Skywire Development Kits allow direct Skywire embedded modem connection to your circuit board with everything you need for successful prototyping. Start developing today!

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Custom Solutions

Have an idea? Need help getting your product to market? NimbeLink has designed and manufactured hundreds of IoT products, and we can help you too!

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Cellular Data Plans

With our name the price tool, we can help you to build an IoT data plan that will fit your budget.

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Skywire Development Kits


Quickly add cellular connectivity to your system or IoT product with the Skywire Development Kit and our Skywire Embedded Modems.

Our SWDK2 also includes an antenna, SIM Card, power supply, and debug cables so you can start developing faster.

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Farm Jenny Case Study

See How Our Customers Use Skywire

Farm Jenny’s founders had a vision: 24/7 horse monitoring. The inspiration for this product came from decades in the technology industry while owning a small horse farm.

From the start, they knew they wanted to use an embedded modem vs. a module in their design to obtain data on the movement and condition of the horses. They were seeking an end-device certified option that could be adapted to their unique needs. Farm Jenny also needed their product to be a simple purchasing experience for customers by offering a single product SKU with a wide range of carrier options.

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Skywire LTE CAT 4, World Wide, GNSS

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Skywire development kit version 2 includes baseboard, antenna, power supply, AT&T SIM card, and debug cables. (Does not include Skywire modem.)

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SIM card, Tri-cut, 2/3/4FF, Verizon, LTE CAT-M1, Commercial Temp range

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SIM card, Tri-cut, 2/3/4FF, AT&T, 4G LTE, Commercial Temp range

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Need Help Choosing?

If you need help selecting a Development Kit, or if you have any other questions, please do not hesitate to contact us.