Which Wi-Fi versions are compatible with the Cook-Key®? The Cook-Key® works with best using a 2G (2.4 GHz connection) instead of a 5G (5 GHz Connection) as it is not compatible. Related articles Why were the ToS (Terms of Service) updated? How to Organize Recipes How can I use "Created Recipes" if I have a TM5®? Can I add notes to my Cookidoo recipes? Where can I get the Cookidoo® app, and what features does it have?