... 4.RF Controller 4 key RGB LED Controller, LED controller, IR led controller,Infrared LED controller, infrared controller, lighting controller, LED Strip Light Controller Product Name:6 key RF LED ControllerSpecification:Part ... 9Seven-color jumpy changing20B/G cross fade10Three-color gradual changingSpeed is adjustable, brightness is unadjustable21G/R cross fade11Seven-color gradual changing