button

https://tts.langeek.co/read?text=YnV0dG9u&hash=bbeb07d94ff3dd75b33d56a2b1eaaa47591f64c5&lang=en&cache-only=0&driver=googletts

Here you will find the vocabulary from Unit 5 - 5D in the Solutions Pre-Intermediate coursebook, such as "operate", "button", "press", etc.