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Title: Not recommended
Review: I bought a Mighty Mule FM502 about 4 years ago. For the past 3.5 years they worked fine. About 4 months ago I replaced the control board for about $200 as it quit. Recently the worm gear nut in one of the arms wore out. The threaded nut is made out of plastic/nylon and is not replaceable. The arms are considered disposable and expensive. A single arm costs approximately 50% the cost of a new unit. I am obviously unhappy that I didn't buy a more quality unit in the first place. I recommend the same to anybody buying a gate opener. Steer clear of anything with plastic parts and/or units you can't buy replacement internals for.
