=== Introduction to fitlet3 ===
* [https://fit-iot.com/web/products/fitlet3/ fitlet3 product page]
* [https://fit-iot.com/files/fitlet3/docsdocuments/fitlet3-owners-manual.pdf fitlet3 owner's manual]* [https://fit-iot.com/files/fitlet3/documents/fitlet3_datasheet_rev+1_0.pdf fitlet3 Datasheet]
=== Hardware ===