Triggers: OFF, ON Darken room action.
This a room attachment/furniture product. Putting this in your room allows people to turn off/on light in the room. If one user turns off light then another can turn it back on.

Note that this product may require some decorating experience to remove. It might be some difficulties locating when applied. I suggest users to lock furnitures when decorating, you do this by using the furniture tools (ctrl + F or ctrl + L).