SAVI Notes are part of a small but powerful lighting system designed to create even illumination and colorful lighting effects throughout your pool and spa. They fit into standard pool fittings as shallow as 4 inches below water level so they are ideal for swimouts, beach entries, sun shelves and other shallow water applications. Multiple SAVI note locations will provide even illumination throughout the pool. They provide a great energy efficient alternative to standard pool lighting and use only 14 watts as opposed to as much as 300 watts for incandescant pool lighting. They typicall last 5x longer than standard pool lighting which means less maintenance cost. They can be used to retrofit fiber optic systems. An M4 controller is required for every 4 lights.