Does this device have a timer function?
Is it possible to run a PowerPoint presentation from a memory stick?
The device is to be placed in the entrance hall and will provide information for visitors.
Many thanks P.

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The device will only be delivered tomorrow and is not for me, but for my mum in a retirement home.
So unfortunately I can't answer your questions.
Here is the manufacturer's link with problem descriptions and contact options: 
https://www.lg.com/ch_de/service/produkt/lg-55UT91006LA.API

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Question about LG 55UT91006LA

Does this device have a timer function? Is it possible to run a PowerPoint presentation from a memory stick? The device is to be placed in the entrance hall and will provide information for visitors. Many thanks P.