Hi @PabloFerrari. It seems that we have similar doors, so with my design, it should work the same way for your door.
Instead of using a separate motor to move the handle to open the latch, it uses the key from the inside to unlock it and then open the latch.
Hello, I used to rep electronic security products and did system design for many years. Very beautiful door! I can see why you’d hesitate to alter it. One solution you might consider is a “no-cut” door strike that would release the keeper on the door latch. Here is a link to an example:
https://www.seco-larm.com/product/sd-991a-d1q/
It would require some integration to whatever deadbolt lock you would choose to release the latch in unison. Hope this helps, best of luck!