The buttons are individually custom-labeled to match the need of each system. The All Button commands up to eight auxiliaries, filtration systems, temperature settings, pump speeds, and diagnostics. The real measure of a control system is not how large and complicated it is, but how compact and easy to use. Spend your time enjoying your pool and spa, not dealing with the responsibilities of maintaining it. The AquaLink RS does that work for you. With built-in features like automatic heater cool down, self monitoring freeze protection, and pool cleaner safety delay, the AquaLink RS virtually eliminates any concerns about equipment operation. Plus, all AquaLink RS control systems are backed by some of the strongest and most inclusive warranties in the industry. So relax and rest assured that your investment is protected and everything is set just right. The AquaLink RS has it all under control!