Twin button control unit

What is a twin button control unit?

A twin button control unit is a control system with simple user guidance.
External requests are served in line with the lift's running direction.
For example, if passengers want to go upwards and have sent the respective call, the lift will go past this stop if it is currently descending. Hence the effectiveness is enhanced and unnecessary waiting periods are avoided.
See also: Conveyor capacity / Increase of ~ LINK!!!!

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