They don't work! I bought two of these so that we could charge phones on either side of the bed via the USB ports. None of the USB ports charge a phone. The phone indicates as "charging", but I woke up to a nearly dead battery. I tested both and witnessed my battery percentage decrease!

The lights turn on inside the shelf. The button to turn the light on, and cycle the colors, works fine on both of my units. However, the motion detection only works on one unit.

I can live without the motion detection feature, but the USBs not even charging on both renders these items completely useless to me.