iFJF Rev Counter Board Compatible with FM350 FM352 FM500 FM502 FM600 2000XL,Replacement for Mighty Mule GTO RVCTBD50, Green
$11.99
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Rev Counter Board replacement.Plug and play.Rev Counter Board: Calculate the opening distance of the opener and solve the problem that your door cannot be opened correctly.Please judge the fault location based on the buzzer sound: 3 beeps will be heard when the main arm is faulty, 4 beeps will be heard when the sub-arm is faulty.Please sealing and draining during installation,avoid short circuit and failure to work caused by water ingress.
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