[RickFLM4]

I don't recall needing to buy anything except the opener. I had mine installed. There are companies / people that specialize in installing and repairing garage doors and openers. If you haven't had the wheels replaced in a while that may be something else to consider (separate from opener) particularly if they are making noise.

No wifi on mine but it works with Homelink and has a keypad on the wall outside the garage.