Bluetooth 4.0 & BR/EDR dual mode module (EOL)

The u-blox OBS421 Bluetooth module series is now end-of-life.

The OBS421 series of Bluetooth modules has been on the market since 2011. Critical components used in the design have reached end-of-life without viable replacements. Due to this, u-blox is forced to withdraw the OBS421 module series from the market. The NINA-B2 series and NORA-B2 series are recommended as alternative solutions (both types are smaller and not pin-to-pin compatible).

Last time buy date – 15 September 2026
Last ship date – 29 October 2027

All orders are non-cancellable and non-returnable (NCNR).