Description The Balboa Exp. Board 2 Pump Relay (GS523DZ) is compatible with GS523DZ and BP2100. This PCB is used as a replacement for an existing PCB failure. This must not be fitted to any other device/product. This should be done by an experienced tradesman or a competent individual as a faulty install could result in board damage and invalidate the warranty. Image shown is an example expansion board the actual part is as described above ,please call if unsure. Length: 115 mm Height: 47 mm
