LED bulbs can be found at most supermarkets, hardware stores, and specialised lighting and electrical shops. Before heading off to the shops, check what sort of bulb you need to exchange. The majority of mild bulbs are described by a system of series designations. Available with screw and bayonet bases, EcoLight home lighting which have the designations Exx and Bxx respectively. The xx refers back to the base’s diameter in millimetres. These are often used as floodlights and EcoLight downlights. They are numbered by the scale of the bulb’s diameter in millimetres, R80 for example. PAR38 is a standard type