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![Photo 1 of [UNTESTED] KSB Mighty Mule GTO Rev Counter Board for FM350 FM352 FM500 FM502 FM600 2000XL - RVCTBD50](https://firebasestorage.googleapis.com/v0/b/nellishr-cbba0.appspot.com/o/processing-photos%2F1080209677%2F8A9FUVvvdH7YOkgx_s75B.jpeg?alt=media&token=32a5dab8-810d-49c4-8b4e-695b5798df0b)
![Photo 1 of [UNTESTED] KSB Mighty Mule GTO Rev Counter Board for FM350 FM352 FM500 FM502 FM600 2000XL - RVCTBD50](https://m.media-amazon.com/images/I/61K0q-MUD9L.jpg)