T8 Dimmable LED Tube (Switching Control | Dimmer Control) is simple designed product to add dimmable features to LED tube for indoor usage. The switch control model uses a chip programmed driver to achieve 3 level brightness control through switching control (20%-80%-100%) without any additional device such as dimmer or remote control. The product has built in chips with memory functions, which the brightness will be remembered for longer switch off duration (instead of instant on and off). On the other hand, the dimmer control model allows 0-100% smooth dimming with a TRIAC dimmer. The product is certified by TUV and SGS with CE LVD, RoHS and ERP and SAA.