Important: Spresense Website Migration Announcement. Click for more details
The Spresense project website will be migrated to a new domain under Sony Semiconductor Solutions on January 16, 2026. The new website URL will be announced at a later date. Please stay tuned for further updates.
Important: Notice Regarding End of Support for Microsoft Windows 11. Click for more details
The Spresense Windows development environment currently supports both Windows 10 and Windows 11. However, with Microsoft ending support for Windows 10, Spresense will also discontinue support for the Windows 10 environment. Moving forward, only Windows 11 will be supported.
Future Supported Environments:
- Arduino Spresense Board Package: Windows 11
- Spresense SDK: Windows 11 (WSL2)

Spresense LTE Extension Board
The Spresense LTE extension board adds LTE connectivity to the Spresense main board and carries an on-board antenna and a nanoSIM card holder. It also extends the interfaces of the Spresense main board with multiple mic inputs, headphone jack and microSD card slot.
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IoT connectivity with Spresense: How to get started with LTE
Product Specification
Spresense LTE extension board | |
|---|---|
Spresense LTE extension board Model name | CXD5602PWBLM1 |
Spresense LTE extension board Size | 45 mm x 50 mm |
Spresense LTE extension board Onboard module | LBAD0XX1SC (Murata Manufacturing module equipped with Altair Semiconductor's ALT1250 Chipset) |
Spresense LTE extension board SIM card | nanoSIM |
Spresense LTE extension board RAT | LTE Cat-M1 NB-IoT |
Spresense LTE extension board Bands | US Band 2, 4, 12, 13 EU Band 3, 20 |
Spresense LTE extension board Antenna | Equipped with onboard antenna |
Spresense LTE extension board Audio input / output | 2 ch analog microphone input or 4 ch digital microphone input Headphone output |
Spresense LTE extension board Digital input / output | Selectable from 3.3 V or 5 V |
Spresense LTE extension board Analog input terminal | 2 ch (5.0 V range) |
Spresense LTE extension board External memory interface | microSD card slot |

Spresense LTE extension board pin assignment




