Businesses selling radio and television goods supply equipment for receiving, viewing and listening to broadcast and digital content. Products commonly include televisions, radios, digital radios, set-top boxes and streaming devices, as well as soundbars, speakers, headphones and home cinema equipment. Shops may also stock aerials, satellite accessories, wall brackets, cables, batteries, remote controls and other replacement parts. Some businesses offer advice on choosing equipment, arrange delivery and provide installation or set-up services, such as connecting a television to an aerial, broadband network or audio system. Depending on the business, services may also include testing, fault diagnosis and repairs to televisions, radios or related equipment. Customers can generally expect assistance with compatibility, connections and basic operation, though the range of products and services varies between retailers.