What is this aftermarket device?

Located underside of dash, passenger side, near the little LED light that illuminates the passenger seat foot area. I figured it was a volume or level control from a previous amp install but it doesn’t turn/rotate.

Any idea what this is??

Located underside of dash, passenger side, near the little LED light that illuminates the passenger seat foot area. I figured it was a volume or level control from a previous amp install but it doesn’t turn/rotate.

Any idea what this is??