The Notecard

Combining prepaid cellular connectivity, low-power design, and secure "off-the-internet" communications in one 30mm x 35mm System-on-Module.


Cellular IoT made easy, and affordable.

  • 500MB and 10 years of cellular connectivity included
  • Global cellular over LTE-M, NB-IoT, or Cat-1
  • Secure “off the internet” communications from device-to-cloud
  • Low-power hardware (~8µA when idle), power-conscious firmware
  • Embed with onboard M.2 Key E connector or via a companion board
  • Unmatched developer experience and JSON-based API

An integrated, low-power cellular data pump

SIM card
Embedded SIM with pre-provisioned network access
Onboard ultra-low-power ARM® Cortex®‐M4 MCU with 2MB Flash
Wi-Fi signal
High-performance 3-axis accelerometer and temp sensor
Regulator ensures consistent draw over battery, solar, or USB
High-performance cellular and GNSS/GPS module
Password input
Secure element with embedded keys and certificates

Bring Your Idea to Life with Our Starter Kits

The Notecard can bring anything online—from a bird feeder to large-scale farm equipment.
Feather development starter kit

Feather Starter Kit

Includes a Notecarrier-AF, an Adafruit Feather ESP32 HUZZAH, and a Notecard SoM with cellular and GPS.
Raspberry Pi development starter kit

Raspberry Pi Starter Kit

Includes a Notecarrier Pi Hat, a Notecard SoM with cellular and GPS, and an external cellular antenna.

Frequently Asked Questions

    Which microcontrollers does the Blues Wireless Notecard support?

    The Notecard is compatible with nearly every microcontroller (MCU) from an 8-bit Arduino to 32-bit ESP32 or STM32. Some popular examples include the Adafruit Huzzah32, STM32 Nucleo, Arduino Nano, ESP32-WROOM, among many others. The Notecard communicates over either I2C or UART, so it acts as a peripheral that you can connect to a product’s existing I2C bus or UART connection.

    It’s also possible to communicate with the Notecard from any embedded language, including compiled languages like C and C++, to interpreted languages like Python and JavaScript.

    Which cellular networks does the Blues Wireless Notecard utilize?

    Different models of the Blues Wireless Notecard are available that connect to LTE-M, NB-IoT, and Cat-1 networks globally. Connectivity is provided by AT&T and backed by roaming agreements AT&T has with top providers around the world. When LTE-M, NB-IoT, or Cat-1 aren’t available, the Notecard is also supported by UMTS/HSPA+ and GSM/GPRS/EDGE wireless standards.

    Which countries does the Blues Wireless Notecard support?

    Global coverage is available in 135 countries, with direct support provided by AT&T and backed by roaming agreements with top providers in regions outside of the United States. For a full list, please see our documentation article on Notecard’s supported countries.

    Does the Blues Wireless Notecard require a Notecarrier to function?

    No! The Blues Wireless Notecard is a small 30mm x 35mm system on module (SoM) that is able to be embedded in any IoT project on its own via its M.2 edge connector.

    However, Blues Wireless provides a variety of Notecarrier host boards for easily adding cellular connectivity to a new or existing IoT solution for prototyping purposes. The Notecarrier also provides antennae for both the GPS and cellular capabilities of the Notecard.

We’re making cellular IoT quick and easy.

Start your journey with us!