Rainbow/ribbon cable - Nuki Opener

Hi team,
What type of cable exactly is the rainbow/ribbon cable that connects into the Nuki opener from the speaker system?

I need to extend this cable as I need to place the Nuki opener further away from the actual speaker then what the included cable allows. I am therefore looking for an extension cable (for about 2-3 meters).

Therefore, could you please let me know what type of cable exactly is used, pitch/connector size in mm, what connectors I would need on the ends (male vs female) etc.?

Ideally, if you could also indicate where I could purchase such extension cable in case this is not available from you directly. Thank you and I look forward to hearing from you.
Best regards