When I looked up a ready made system I saw it cost 370 euros !! That's when I decided to make it my self !
Here my instructables ! Have fun !
Step 1: Opening
Then you have to make an opening (a square of 10cm). I did this with a small drill and a jig saw. You could use a fretsaw or a dremel.
It's important to damage the square you saw out as less as possible, because it is reused as the cover. But you could use an other cover to.
Step 2: Create base
Step 3: Attach the sliders
Step 4: Attach the sockets
You also have to attach a hook on top of the box. This hook attaches the cover to the box and because the hook is made out of metal, it's also used for the magnetic lock system.