What’s this on my sliding door card?

Mahogany Head

New Member
Can anyone tell me what the white disk thing is.... I was about to take the door card off and I noticed that there's a thin wire attached to it...

side door card.jpg
 
There’s not one on mine, and I can’t say I‘ve seen something like that before.
 
My combi doesnt have that and cant say i have seen one before ??
 
Just to clarify the two bolts below are normal, these are bolts for the sliding door 'runner' that moves the door up and down the side track but the circle, thats a mystery !!
 
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