That dumb definition just pushes the question futher:
- What is "awareness"?
- What is "sensory input"?

Is something weighing on a see-saw "sensory input" to that system? Is electricity coming into a light bulb "sensory input"? Is there "awareness" involved? How could you possibly know?

You're talking about these things as if you know them for fact, but fact is that science is dumb-founded when it comes to even agreeing on a definition for what consciousness and subjective awareness even is, or how to think about it.