Note: It looks different to original PCB from the SCS 501 controllers but it still fits properly and has the same functions.
It may have a bar code number of 54512, 53341, 55514 ,53341, etc. To ensure a correct match, do not go by the "GS500 or GS500Z" stamped into the left corner of the board as this is common to the entire range, look on the software chip label for an exact match.
This PCB can have the following set up functions: 1. 1x Circ Pump, 1x 1 Speed Pump, 1x Blower, Ozone, Light. 2. 1x 2 Speed Pump, Blower, Light, Ozone.
Other Balboa GS501Z Parts: