J-300 (1 Pump) 60Hz Circuit Board 20+

Compatible with all 1 pump J-300 models 2020+ (Encrypted board).  Will not work with older control panels. Replaces 6600-499 circuit board for 06-2018 to 2019 1 pump J-300 models. When used in pre-06/2018 spas, it needs to be reprogrammed with a Pic-iT kit. 

Manufacturer Model: 6600-499

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