I might be wrong but i do not think all of the units have the same protocol. Have you contacted Toshiba, they have a technical support staff that might help you. Before you go that route spend some time with google or your favorite search engine. I used "toshiba AC protocol" and found several both hardwired and IR on my first try. There was even an arduino project. Not knowing what unit you have I could not pick the correct one or pass on the link.