The SLD is an APP typically designed for BLE Mesh starter-kits that have preset scenes defined in the kits. Because starter-kits lighting fixtures have the benefit of install-and-play for users, and with SLD, they can easily modify content of starter-kit preset scene on their own preferences, and then un-limited possibilities of atmosphere can be created except preset. Therefore, SLD can make smart starter-kits even interesting when playing with them.