Replacement Platinum Circuit Board, Part # 1-00-05886 for the Harman Advance, Accentra FS, Accentra Insert, P35I, P43, P61A, P68, and XXV. Supercedes from circuit board part# 3-20-05374. Dip switch settings must be set based on the model prior to installation. Instructions for proper dip switch settings are included, along with new knobs and knob shafts. Due to the sensitive nature of control boards, there are absolutely NO RETURNS on control boards after purchase. If you have questions about whether or not you need a control board replacement, please feel free to contact us, and we will do our best to assist you.