This economical Balboa spa control system is a great option for retro-fitting older hot tubs if the original equipment has died.  It uses Balboa's patented M7 technology which eliminates pressure switches or flow switches. The equipment connects to the control system using AMP plugs.

It manages the following equipment:

• Either a 24-hour circulation pump or a two-speed pump
• A massage pump
• A blower
• Built in 3kW heater with Incoloy 800 element
• Ozonator (220V)
• Underwater lighting (12V, 10W)

Compatible with the following keypads
VL600S, VL700S, VL701S, VL702S

Dimensions
Height: 268 mm
Width: 311 mm (box only, excluding the heater)
Depth: 112 mm
Plumbing connections to heater: 2" (connections and o-rings included)

Warranty
1-year tubs.fr guarantee, backed by Balboa

Balboa Part numbers
Complete GS501SZ system: 54517
Incoloy 800 3kW heater: 58118