What's in this overhead panel?

[umbertob]

Between second and third sunroof, above the second row seatbacks:

If I didn't know any better I'd think it's a motion sensor for the volumetric alarm system. But, we don't have that type of alarm in North America, ours is only perimetric AFAIK. I suspect it may contain a transmitter / receiver for the wireless headphones supplied with my RSES, but the manual doesn't really say.

 

[PALR4]

I'm pretty sure I didn't have that in my non RSE LR4.

 

[mbw]

That is the WhiteFire IR emitter for the headphones on the new rear seat entertainment system.

Whitefire IR Transmission
A REAL-TIME, SYNCHRONOUS,
MULTIPLEXED 16-BIT DIGITAL
PROTOCOL.
Data Rate 11.52 Mbps
Digital Conversion 16 bit uncompressed
Modulation PPM

http://www.unwiredtechnology.com/images/WhiteFire.pdf