J-300 2 Pump 60Hz Circuit BoardCompatible with all 2 pump J 300 models 2020+ (Encrypted board). Will not work with older control panels. When used in pre 06 2018 spas, it needs to be reprogrammed with a Pic iT kit. Replaced 6600 420. Manufacturer Model: 6600 505 Free Shipping Over $50 *No Returns Refunds on Spa Parts*
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