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2. Wireless intercom - Wikipedia

   en.wikipedia.org/wiki/Wireless_intercom

   A wireless intercom is a telecommunications device that enables voice communication without the need to run copper wires between intercom stations. A wired intercom system may incorporate wireless elements. There are many types of wireless intercom systems on the market. Most wireless intercom systems communicate by radio waves using one of the ...

3. Drive-through - Wikipedia

   en.wikipedia.org/wiki/Drive-through

   Some fast food chains, such as this Rally's located near New Orleans, Louisiana, have two drive-throughs. A drive-through or drive-thru (a sensational spelling of the word through ), is a type of take-out service provided by a business that allows customers to purchase products without leaving their cars. The format was pioneered in the United ...

4. Clear-Com - Wikipedia

   en.wikipedia.org/wiki/Clear-Com

   The company's FreeSpeak wireless intercom was nominated in 2020 for a TEC Award. Clear-Com was purchased in 2010 by Southern California electronics manufacturer HME, known for supplying wireless headsets for drive-through fast-food restaurant operations. Company headquarters were moved from Poway to Carlsbad, California, in 2018. References

5. The 7 Best Wireless Surround Sound Systems for an ... - AOL

   www.aol.com/best-wireless-surround-sound-systems...

   Best Wireless Surround Sound Systems. Best for Audio Fanatics: Nakamichi Shockwafe Elite. Best Theater Sound: Sony HT-A7000. Best Value: VIZIO M-Series 5.1. Best Upgrade For A Wired System ...

6. Intercoms: A History of Distance - AOL

   www.aol.com/news/intercoms-history-distance...

   The earliest intercom uses date back to the late 1960s and early 1970s, when concerts became too loud to allow for waving pieces of paper or shouting from the stage to the back of the hall.

7. Point of sale - Wikipedia

   en.wikipedia.org/wiki/Point_of_sale

   The point of sale (POS) or point of purchase (POP) is the time and place at which a retail transaction is completed.At the point of sale, the merchant calculates the amount owed by the customer, indicates that amount, may prepare an invoice for the customer (which may be a cash register printout), and indicates the options for the customer to make payment.