You have no control, neither with a switch to turn it off nor in the programs to select. It is fully automatic with a timer. I would prefer if it was clarified in the description.
The intensity is moderate. It looks quite good in the dark. The price, around 30 euros (including shipping), is decent.

Quite good performance for its price.

It is very good for indoor walls.

Do not use it to light up trees, bushes or anything like that, because it doesn't show anything!