Balboa GS501 53340 3kw Control Box.

This GS501 (not SZ) Balboa control box allows you to run a spa that either has two pumps. Likewise one pump and air blower system.

Spec:

1 Pump – One Speed or Two Speed (Circ Pump).
2 Pump – One Speed or Air Blower.
Circ Pump – 24hr Operation (or low speed on Pump 1).
Air Blower – ON/OFF (If no Pump2).
Ozone – Yes.
Heater – 3Kw M7.
Light – 12 Volt.
Flow Detection – M7 Sensors.

Use’s Balboa Serial Standard Panels.