Welcome to the nRF Connect SDK!

The nRF Connect SDK is where you begin building low power cellular IoT applications with LTE-M and NB-IoT on the nRF9160, and Bluetooth Low Energy applications on the nRF5340. It offers a range of application samples and reference implementations, as well as a full suite of drivers for Nordic Semiconductor’s devices. The nRF Connect SDK includes the Zephyr™ real-time operating system (RTOS), which is built for connected low power products.


The nRF Connect SDK contains reference applications, sample source code, and libraries for developing low-power wireless applications with nRF52 and nRF53 Series devices, though support for these devices is incomplete and not recommended for production.

Documentation for different versions of the nRF Connect SDK is available at the following links: