[four modes of light change description] : four modes of light change refers to the decorative light source around the light can be their own control. Open, illuminant is blue, violet, red, gradual change -- close again open, illuminant is blue, violet, red, slow flash -- close again open, illuminant is blue, violet, red, quick flash -- close again open, illuminant is blue light -- close again open, illuminant is violet light -- close again open, illuminant is red light. A total of 6 levels can be adjusted, need which kind of illuminant illuminant needs common switch to be able to control oneself only.