B SoM LTE-M (NorAm) with EtherSIM, Tray (B404X) [x50]

SKU: B404XMTY In stock

This product is only available for approved customers. If you wish to apply to purchase bulk products, you can do so here. If you have questions on pricing please contact our sales team here.

Certified Antenna(s)

Wide band LTE-M cell antenna (PARANTC41) [x50]

Wide band LTE-M cell antenna (PARANTC41) [x50]

2.4GHz PCB Antenna (ANT-FLXV2-50) [x50]

2.4GHz PCB Antenna (ANT-FLXV2-50) [x50]



This product is powered by EtherSIMParticle's new globally available, self-optimizing SIM with no data plans or device fees. 

Buy this hardware and start building with Particle's Free Plan which includes support for up to 100 devices, cellular data, and fully-featured platform access with no time limit.

The B-SoM System-on-a-Module (SoM) can act as a standalone cellular endpoint. It is based on the Nordic nRF52840 micro-controller.

The B SoM is designed to be integrated into your circuit board design, plugging a M.2 NGFF connector on your board, allowing the module to be changed or upgraded easily.

The B404 module supports LTE M1 connectivity.


    • 50x B404X SoMs
    • MFF2 SMD Particle SIM
    • *Antennas are NOT included, please purchase these separately (SKUs: PARANTC41TY & ANT-FLXV2-50)


    • u-blox SARA-R510 LTE modem
    • LTE-M module with global hardware support (MVNO support for United States, Canada, and Mexico only)
    • 3GPP Release 14 LTE-M
    • Cat M1 bands: 2, 3, 4, 5, 8, 12, 13, 20, 28
    • Nordic Semiconductor nRF52840 SoC
      • ARM Cortex-M4F 32-bit processor @ 64MHz
      • 1MB flash, 256KB RAM
      • IEEE 802.15.4-2006: 250 Kbps
      • Bluetooth 5: 2 Mbps, 1 Mbps, 500 Kbps, 125 Kbps
      • Supports DSP instructions, HW accelerated Floating Point Unit (FPU) calculations
      • ARM TrustZone CryptoCell-310 Cryptographic and security module
      • Up to +8 dBm TX power (down to -20 dBm in 4 dB steps)
      • NFC-A tag
    • On-module additional 4MB SPI flash
    • 24 mixed signal GPIO (8 x Analog, 4 x PWM), UART, I2C, SPI
    • USB 2.0 full speed (12 Mbps)
    • JTAG (SWD) pins
    • RGB status pins for LED
    • Reset and Mode pins for buttons
    • On-module MFF2 Particle SIM
    • Two on-module U.FL connectors for external antennas
    • M.2 interface
    • FCC, IC and PTCRB certified
    • RoHS compliant (lead-free)

    The B404 SoM includes a MFF2 SMD Particle SIM. It can only be used in the United States, Canada, and Mexico at this time. A list of supported carriers can be found here. It cannot be used with a 3rd-party SIM card.


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    Frequently asked questions

    What is Particle & do I need a device to use Particle's platform?

    Particle is the leading integrated IoT Platform-as-a-Service for developers and enterprises to build world-class intelligent connected products. Our devices serve as the entry point to our platform as they are pre-integrated with the full capabilities of Particle PaaS.

    What kinds of projects can I build with Particle?

    Particle’s platform enables IoT projects with broadly diverse use cases by providing the foundational technology for standard IoT connectivity, with the ability to customize hardware and software interfaces, and workflows, to your unique project or product needs. From tracking the location of your moving asset, to monitoring equipment to reduce your maintenance costs, to measuring air quality to meet regulatory standards, and nearly any other use case you can imagine, Particle unlocks the promise of IoT for any use case.

    Which kit is the best for me / how do I choose?

    Particle’s portfolio of devices supports a wide range of connectivity options, form factors, and peripherals, all with the same common architecture and software platform. You can choose the most appropriate device by reviewing your use case requirements, and stage of development.
    If you need further assistance, reach out to us to discover how Particle devices can support your project.

    Can I buy Particle’s devices in bulk?

    Yes, all of our modules and antennas can be purchased in bulk on the wholesale store.

    Where can I find resources to learn more about my devices?

    We recommend you start by going to our device platform guide and reviewing relevant datasheets, tutorials, and specs of the device of your choosing. You can also connect with our community to learn more about Particle devices, the Particle cloud, and all things related to IoT.

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