Wall Listening Device and Airport/Border/Controll

[Cuchullain-1]

Hi Guys,
I have a Question....does anyone of you inside Europe have any experiences with taking your Wall-Listening Device in your Bag on an Airplane ?
Have you ever been stopped or asked while going through the Security Controll - Why you´re taking this Spy-tool with you ?
Did anyone asked you what it is or to open your Bag after the X-Ray ?
I´m asking because I would love to take this Device with me next time I am travelling again - if it will be possible again.