First, to make sure we’re all talking about the same thing…
Normally smart LED strips, just like most smart bulbs, are intended to always be on power. The “off” is controlled by the strips themselves, which turn their lights off while remaining on power. That way, the radio has power to hear the next “on“ command from the network.
For example, if you use Alexa or another voice assistant to turn off a smart light strip, it goes dark, but it still has power. Otherwise, you’d never be able to tell Alexa to turn the lights on, because it wouldn’t hear that command.
Same thing with triggering the lights from your occupancy sensor. When they go off, they are not without power: they’re just in a dark state.
So… are you saying that you expect your guests to do something that would actually fully cut the current to the light strip? If so, you would have to do something manually to restore the current before your occupancy sensor could work again.
(We should also note that again, just like most smart bulbs, smart LED strips should be OK to handle a rare power outage like power going out in your neighborhood, but if you are regularly cutting the power to them altogether with a wall switch, then you can significantly reduce the life of what are already expensive devices, typically by about 25%. That’s because the “inrush current” when Power is turned back on, can, over time, damage the radio inside the strip. So it’s best to just leave these devices always on power, and use the smart options to turn them dark when desired.)
Or are you just asking if after the occupancy sensor tells the lights to turn off you want to be sure that when the occupancy sensor turns the lights on again they are at your preferred settings?
So having the same settings after an actual power cut is “power restore” behavior. But just getting the same settings every time the occupancy sensor tells the strip to turn on is a different function.
Once we know which you’re looking for, we can discuss specific device candidates. 