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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. 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

4. Power-line communication - Wikipedia

   en.wikipedia.org/wiki/Power-line_communication

   Power line adapter. Power-line communication ( PLC) is the carrying of data on a conductor that is also used simultaneously for AC electric power transmission or electric power distribution to consumers. The line that does so is known as a power-line carrier . In the past, power lines were solely used for transmitting electricity.

5. The Fastest Drive-Thru Chains Out There - AOL

   www.aol.com/finance/fastest-drive-thru-chains...

   Fast-Food Drive-Thrus, Ranked. In 1948, In-N-Out came up with the most quintessentially American technology: the modern drive-thru.With its intercom ordering system and promise of fast service ...

6. 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 ...

7. Point of sale - Wikipedia

   en.wikipedia.org/wiki/Point_of_sale

   In addition to registers, drive-through and kitchen displays are used to view orders. Once orders appear they may be deleted or recalled by the touch interface or by bump bars. Drive-through systems are often enhanced by the use of drive-through wireless (or headset) intercoms.