Alarm mine?

[wz.KC]

Hi,

Find today in German trench.
Looks like part of some small alarm mine?
I have seen something like this before on www, but i can remind where was that...

Any ideas?

Regards.

 

[blu97]

This is the clip of a "alarmleuchtzeigen".
See attached link.
http://www.lexpev.nl/minesandcharges/europe/germany/alarmleuchtzeichen2types.html