> 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/sdr-iot-and-expansion-hardware.md).

# SDR, IoT & Expansion 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/)