GS520DZ with a 3kw M7 heater, this control box will operate: 2x pumps (Both with 2 speeds), 1x blower, 1x ozone and 1x 12v light.
*Works only with Deluxe VL Topside Controls*
GS523DZ with a 3kw M7 heater, this control box will operate: 3x pumps, 1x blower, 1x ozone and 1x 12v light.
*Works with Balboa Deluxe range of Topside Controls*
GS523DZ PCB - Very common & works with Balboa GS packs.
HPGL2K3P PCB - Hydropool specific board by Balboa.
Hydropool specific PCB by Balboa for HPL102/103/105 spa control boxes.
GL2000 PCB for Hydrospa HSEX2000 plastic control boxes.
Lite Leader topside with overlay & 6 pin connector - Used on DIY Tubs, Master Spas, Spaform Spas, replaces short cable type 51705.
Aquamonde AQU100 M3 PCB - Aquamonde specific PCB by Balboa.
M3 Elite 2 Pump PCB - Found on older metal Signature Spas/Balboa control boxes.
**Correct image coming soon**
M3 Elite 2 Pump PCB - Found on older metal M3 Elite Balboa control boxes,
M3 Elite PCB - Found on older metal M3 Balboa control boxes, can be used as a cheap alternative to the Spaform SF273 52604 PCB.
Hydropool HPL205 M3 PCB - Hydropool specific PCB by Balboa.
Hydrospa HSEXP M3 PCB - Hydrospa specific PCB by Balboa.