Notecard LoRa is launching on February 29th! Join the webinar with Blues and The Things Industries.

Bi-Directional IoT Connectivity

Easily integrates with existing firmware through a simple JSON-based API.

Laptop with code
JSON requests in a terminal

Simplify Your Security Audit

Graphic of Notehub portion of the Blue Wireless program flow.

Secure Data With Blues Wireless

  • Hardware-based encryption for data in transit.
  • Notecards contain native libraries to encrypt data at rest.
  • Notecard supports end-to-end encryption of your data using AES-256 symmetric algorithm based on your RSA public key.
  • Off-the-internet cellular communications available in 135+ countries. Avoid the need for IT-managed Wi-Fi networks.

Read more about Security at Blues

Control Data Visibility From Edge to Cloud

3 Steps to IoT Device Connectivity


Add Blues Wireless Notecard to your product with your preferred hardware.


Our simple JSON interface allows you to connect and send data with 2 commands.


With Blues Wireless Notehub, enjoy secure, bidirectional data flow between your device and your cloud app.

Built by Engineers for Engineers

Graphic of Notehub portion of the Blue Wireless program flow.

Developer Focused Experience

Our technical experience is designed to reduce R&D time by providing connectivity out of the box, so you can cut development cycles and project risk.

Explore the Developer Portal

Solution Components

Integrated hardware and software system contains everything you need to push sensor data to your cloud. Simply push JSON packets to the Notecard, we'll take care of the rest.


Write firmware in Arduino, Python, C/C++, and Go.


Low-power hardware (~8μA when idle) enables power-conscious firmware.

How to Evaluate Blues Wireless in 30 Minutes or Less

With Blues Wireless, you'll never worry about monthly or consumption fees.
Each billing account is refreshed to 5,000 credits each month with the ability to purchase more.


You can pick a starter kit based on ESP32, Raspberry Pi, or our own feather-compatible microcontroller Swan.


Plug the Notecard into the provided Notecarrier, then connect to your existing hardware.


Follow along with our quickstart. In 30 minutes, you'll have a device connected to the global cellular data network, and data flowing from device to cloud, and back to device again.


  • Feather kit and Swan kit contain MCUs. If you want our Raspberry Pi kit, you'll need your own Pi.
  • Swan lets you write code in C/C++, Arduino, and CircuitPython. It's also a powerful MCU and ready to run on edge-based machine learning like Edge Impulse. We have a guide for that.

We’re making IoT quick and easy.

Start your IoT journey with us!