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.
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Current: 2018 SO/SS F83 ZCP
Gone: 2015 SO/SO F82
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