Balboa VL801 touch pad, 8 button, used in the GS series controllers with a D in the model number "GS523DZ"
Uses phone style plug connection
187mm x 83mm, Hole size required 162mm x 60mm
LA Spas, Balboa instruments, Signature Spas, Maax Spas, Hibiscus Spas, Dimension One Spas and many others use this Balboa serial digital deluxe 8 button touchpad panel.
Also replaces SIG500 long 8 button touchpad with scrolling display, but will require a patch plate to cover the longer hole.