LED bulbs can be found at most supermarkets, hardware shops, and specialised lighting and electrical outlets. Earlier than heading off to the outlets, examine what kind of bulb you wish to exchange. Nearly all of gentle bulbs are described by a system of series designations. Available with screw and bayonet bases, which have the designations Exx and Bxx respectively. The xx refers back to the base’s diameter in millimetres. These are sometimes used as floodlights and EcoLight downlights. They are numbered by the size of the bulb’s diameter in millimetres, R80 for instance. PAR38 is a typical type