T8 CCT Adjustable LED Tube (Switching Control) is simple designed product to simplify dimmable needs of LED tube for indoor usage. The product uses a mixture of warm and cool color LED chips to achieve 3 color temperature switching. With repeated on and off switching, color temperature of the tube will change from 6500K to 4000K and then to 3000K, without any additional device such as dimmer or remote control. The product has built in chips with memory functions, which the light color will be remembered for longer switch off duration (instead of instant on and off). The product is certified by TUV and SGS with CE LVD, RoHS and ERP and SAA.