What's the difference between Classic Version and Light Control Version? ► Classic Version : You can turn on the light by turning on the switch after turning on the power. ► Sound Control Version : There are three gears for the Module Sensitivity Adjuster. Please choose the one that suitable for your environment. No need to turn on the light manually, which is extremely convenient and time-saving. We are always committed to providing our customers with high quality products and perfect service. If you have any questions or problems, please let us know by email at your convenience. We will reply you asap and provide you with a satisfying solution. Have a happy shopping experience! Read more Package & Tips (1) All parts will be packed in individual bags, and then integrated into a new original box. (2) When receiving the parcel, please confirm if there are any missing parts and test whether every lamp pellet can light up. (3) During the installation process, please do not pull the wires forcibly. If there're something wrong with light kit, please don't hesitate to let us know. Read more