Outdated spa control systems can mean wasted time and a significant reduction in the efficiency of spa equipment operation. Updating an out-of-date control system can be done for a fraction of the cost of buying a new spa. Retrofit Kits by Balboa utilize their patented M7 temperature flow and sensor technology and a universal control platform. The connectors are built onto the circuit board to minimize wires and simplify service. The different models have controls for a single two speed pump or an additional blower or pump. All of these features increase the reliability, ease of installation, and serviceability of the control.