Deletion of Sigfox

Comment: plenty of  on the subject, such as https://books.google.com/books?id=ApcoDQAAQBAJ&pg=PA665&dq=%22Sigfox%22&hl=en&sa=X&ved=0ahUKEwiu-N7R7anSAhUFTSYKHcZDDGoQ6AEIKzAC#v=onepage&q=%22Sigfox%22&f=false.  Agree with AdventurousSquirrel
Stance: keep
Cited policy: Wikipedia:Reliable sources (WP:RS)