The doors don’t have skeletal meshes, so I doubt they’re animated. I believe it’s a manipulation of the transform components. I do not know for certain.
As to your motion-sensor light… try enabling CCD (Continuous Collision Detection) in the collision settings of your overlap/collision component. That is used for repeatedly checking the sphere/box/capsule for colliding actors.
Also double check your collision preset settings. It really should be as simple as onoverlapbegin> activate component(light) | onoverlapend deactivate component(light).
-WM