Lamp Socket adapters enable light bulbs to be fitted to lamps or other light fixtures that are built with sockets of varying sizes. These adapters essentially work as interim sockets that, once screwed into a fixture’s own socket, allow for such fixtures to use either larger or smaller light bulbs than what they have been built to hold. Socket adapters that allow for the fitting of smaller bulbs are called ‘socket reducers’ while those that enable the use of larger bulbs are called ‘socket enlargers’.
many types of adapters have been invented to take advantage of the availability of the lamp socket. Common types include the adapters that screw into the lamp socket and convert it into a wall outlet. This is particularly convenient when installing outside Christmas lights when a standard outlet is not available. Other types convert the light socket into a switchable outlet while still allowing for the use of the light bulb. Smoke detectors have also been designed to connect to the porcelain lampholder without interfering with the light bulb's operation.
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