Yes, this has a Motion Sensor feature and the ability to automatically power off at a set time.
By Nixplay & NIX on May 24, 2014

It depends on the size of the photos you will be posting. For example if your photos are 5 MB in size each, that would give you 20 per 100 MB of storage space and that times 100 = 10 GB = 2,000 photos. Adjust for the actual size in MB for the photos you are posting. Of course you could reduce the size of each photo … see more It depends on the size of the photos you will be posting. For example if your photos are 5 MB in size each, that would give you 20 per 100 MB of storage space and that times 100 = 10 GB = 2,000 photos. Adjust for the actual size in MB for the photos you are posting. Of course you could reduce the size of each photo to say 100 KB each from a photo editor in Windows since they are not going to be printed and that size would be very sufficient for display on the Nixplay which would then up your count to 100,000 photos you could store. see less
By Calendaria on November 19, 2014

Yup, it's pretty cool. Once you have it set up, you can indeed control it remotely. I'm not sure if you can turn it off and on remotely since I haven't tried yet, but you can change everything else you mentioned remotely.
By Ajax840 on March 6, 2015

Use the remote control to go the main menu, you will see the ability to set the clock and the calendar on that page
By Don Campbell on June 18, 2015