Strange device on the EN57 cab

[jmluengor]

In the cab of the ET22 I discovered this device that I don't know. What exactly is it? Thank you for your attention.

Edited October 22 by jmluengor
Wrong title

[Conrad]

This is the EN57 cab

Like this 


 Door open indicator type SOD1

https://eltronik.pl/sod1/

[jmluengor]

True. I chose the wrong vehicle! I’ll edit the title. Thank you very much for your correction and clarification.

Edited October 22 by jmluengor