Skywire® 4G LTE CAT 1 AT&T -WNC Embedded Modem

NimbeLink’s 4G LTE CAT 1  WNC modem for the AT&T cellular network. Designed for IoT and M2M applications, this embedded modem offers the lower price and speed of obsolete 2G technology with the long life and capabilities of the modern 4G LTE CAT1 network.

Based on an Altair chipset, the Skywire 4G LTE CAT 1 embedded modem, and its Skywire Verizon companion model are the first Cat 1 LTE modems with FCC and carrier-required end-device-certifications. End-device-certification eliminates months of testing and tens of thousands of dollars in cost and helps speed products to market.

Like other modems in the NimbeLink’s Skywire family, the LTE CAT 1 modem is the smallest in the industry and is compatible with a variety of NimbeLink development kits and microprocessor shields, for fast, easy integration of cellular connectivity into new and existing products. It also shares the Skywire standard interface with all other modems in the Skywire family, ensuring long product life. Its U.FL ports provide antenna flexibility, and the modem requires just voltage and a serial UART or USB connection. It supports a wide range of voltages for design flexibility.

Available now, contact us for more information.

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  • Carrier certification complete, no additional work required
  • Removable SIM card slot
  • Antenna independent certification increases selection flexibility
  • Connectivity via Serial UART or USB
  • Supports a wide range of I/O voltages for design flexibility
  • Development kits available
  • Skywire standard interface
  • Lower power & lower cost than LTE Cat 3-4 and 3G technologies
  • Pricing comparable to other LPWAN technologies
  • Easy to integrate – pin compatible with all Skywire modems
  • Throughput: 10Mbps download/5Mbps upload
  • Active Cell: 560 mA
  • Average Power: 152 mA
  • Idle: 75 mA
  • Low-Power: 7.6 mA
  • Input Voltage: 3V-5.5V
  • I/O Voltage: 1.65V-5.5V
  • Temperature Range: -25º to +75ºC
  • Dimensions: 29mm x 33mm x 10.5mm
  • RoHS compliant

Deployable Region

North America


Other carriers supporting PTCRB certification


LTE B2, B4, B12


Skywire cellular modems are the fastest way to get cellular connectivity.

Development Kits

Simplify cellular modem connectivity and prototyping.

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Cellular Data Plans

NimbeLink’s data plans utilize most reliable cellular networks.

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Comprehensive Support Services

As a NimbeLink customer, you have access to cellular specialists.

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Greenbox Case Study

See How Our Customers Use Skywire

GreenBox monitors all aspects of a building’s hot water system to maintain water temperature and availability, while also controlling energy use. They needed a connected device that would install easily and collect and transmit data readily. NimbeLink was selected for both for its end-device carrier certified Skywire cellular modems, as well as their support in developing on-premise hardware and software…

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Skywire® modem, LTE CAT 1, AT&T, Firmware v11.50.173262


Skywire® modem, LTE CAT 1, AT&T, Firmware v11.50 171541, not recommended for new designs


Skywire® modem, LTE CAT 1, AT&T, Firmware v11.50 165131, not recommended for new designs



Skywire® development kit includes baseboard, antenna, power supply, SIM cards, and debug cables. (Doesn't include Skywire modem)

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SIM card, AT&T, 3FF, Commercial Temp range

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SIM card, T-Mobile, 3FF, Commercial Temp range

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SIM card, Vodafone, 3FF, Commercial Temp range

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Need Help Choosing?

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