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Title: The circuit board worked only for 4 month
Review: Well, I bought the 502 dual opener 4 month ago and had a professional installed for me. I use the opener for about once a day. Last week it stopped working. I followed the trouble shooting guide and eventually found that the circuit board stopped charging the batteries. Spent half a hour calling into the GTO tech support and was told to send in the circuit board for checking if it was caused by lightning, power surge, or is a defect (warranty only covers defects).My suggestion is to stay away from it.
