> For the complete documentation index, see [llms.txt](https://docs.mtoolstec.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mtoolstec.com/hardware/sdr-iot-and-expansion-hardware.md).

# SDR, IoT & Expansion Hardware

Product selection for software-defined radio, M5Stack, Flipper Zero expansions, and other IoT hardware.

These products currently use their store pages as the primary source for specifications and compatibility. Dedicated technical guides will be added as the documentation library expands.

## Software-defined radio

* [RTL-SDR Blog V3](https://shop.mtoolstec.com/product/rtl-sdr-blog-v3-software-defined-radio-dongle-usb-c/)
* [SignalSDR Pro](https://shop.mtoolstec.com/product/signalsdr-pro/)

## M5Stack and IoT

* [M5StickC PLUS SE](https://shop.mtoolstec.com/product/m5stickc-plus-se-mini-iot-dev-kit-esp32-pico/)
* [M5StickC PLUS2](https://shop.mtoolstec.com/product/m5stickc-plus2-esp32-mini-iot-development-kit/)
* [M5StickS3](https://shop.mtoolstec.com/product/m5sticks3-esp32-s3-mini-iot-development-kit/)

## Flipper Zero expansions

* [UHF RFID expansion](https://shop.mtoolstec.com/product/uhf-expansion-for-flipperzero/)
* [CC1101 Sub-GHz expansion](https://shop.mtoolstec.com/product/flipper-zero-cc1101-module-subghz-433mhz-multi-function-development-board/)
* [Browse all Flipper Zero accessories](https://shop.mtoolstec.com/product-category/accessories/flipper-zero-accessories/)

## Store and support

* [Browse all products](https://shop.mtoolstec.com/shop/)
* [Contact technical support](https://shop.mtoolstec.com/contact-us/)