Establishments primarily engaged in packaging, repackaging, and bottling of purchased chemical products, but not engaged in manufacturing chemicals and allied products, are classified in Wholesale or Retail Trade industries.
A phone connector, also known as phone jack, audio jack, headphone jack or jack plug, is a family of electrical connectors typically used for analog audio signals. The phone connector was invented for use in telephone switchboards in the 19th century and is still widely used. The phone connector is cylindrical in shape, with a grooved tip to retain it. In its original audio configuration, it typically has two, three, four and, occasionally, five contacts. Three-contact versions are known as TRS
Electrical Plug Type. If you are in charge of building or expanding a data center, the charts below may help you get the right vocabulary to talk to electricians effectively. The connectors are designated Male and Female depending on whether they have the plunges sticking out or holes on them, respectively. These names are now changed to the more politically correct Plug and Receptacle. In some literature, receptacles are also called outlets.