Air data sensor heat panel as found in the L1011 Tristar. This panel is part of the temperature control system for the probes and pitots which are responsible for the flight data.
The panel is in good condition, though the back of the panel (normally hidden from view) has come apart slightly. It can be easily repaired and is not affected when mounted in a panel.
The panel includes 4 indicator buttons and the panel appears to be wired to a rectangular connector on the rear of the panel which could be traces to partially illuminate or interface the panel though this is at your own risk.
An ideal real part addition to your flight simulator.