LED Strip Lights turn on by themselves
I was thinking the same thing as Isherwood’s comment.
To identify the type cover the remote and see if it works.  if it will not turn on when blocked it is IR if it works it is RF.
One tell tail sign of IR is lenses exposed on the end this is normally a IR diode clear in color , some have a plastic cover over them and this can not be seen.
Both types can be affected by other remotes and even noisy power these usually have low end decoders compared to a tv or similar remote that have very specific signals.
If the unit is RF you can attenuate stray signals from outside the home with foil. Make a small cup shaped foil around the back it doesn't have to touch it can be like an umbrella and signals from the street will be attenuated and reduce false triggers (a sideways umbrella) this will not stop signals in the house but could reduce them.