Yes, the parts can fall apart if they are slightly tilted during installation. But then displayed 4 parts (slide, housing and 2 springs) are reassembled in an estimated 2 seconds. So really no big deal.
So just be a little careful when fitting and then all this is no problem:
It is easiest if one expands the socket, then you get better at the screw outlet protection begins and only then everything moves in the left hand in the wall opposite. Make sure that the protection is not pushed out. Then reindrehen screw and make the cross-check with a plug (see below.).
The same applies for the function:
Here was criticized by some, that the slider does not work after installation. Hmmm, if you had ever thought before, this reviewer would it come by itself, why this is so: If I could verschraube these parts, then I come to a point where I Compress all parts. So just when installing and have cross-checked a plug within reach. Then nothing hooked and the slider also bleibgt not hang.
So if you want to have a secure means of preventing unwanted contact in the socket, which is very low at the same time, I can only recommend to the screw type connectors. Oh yes, you have to bring a little manual dexterity, namely the injury-free handling of a screwdriver. But that was supposed to in times of IKEA everyone can.
5 star, a strong buy recommendation !!!