Great news for those who maintain Fermator and Alyans door operators, this includes models found on Schindler 3300s and Oronas. If, for any reason, you're having difficulty obtaining parts or with shipment, GAL has a great solution (upgrade kit).

Link: https://www.gal.com/wp-content/uploads/2023/08/Schindler-3300-to-GAL-MONXT.pdf

NOTE: The info in the link is exclusively for the Fermator versions used on North American Schindler 3300s. Upgrading other brands of elevators such as Orona that use Fermator or Alyans door operators should be very similar with the same kit.