SwitchBot Lock Ultra – Euro Cylinder Adapter Plate

This is a custom adapter plate for the SwitchBot WiFi Smart Lock Ultra, designed specifically for a Euro cylinder lock. The central hole fits the cylinder, while the side holes and upper posts align with the SwitchBot Lock Ultra to keep it stable and correctly positioned. Print the part flat on the plate with at least 3 perimeters and 30–40% infill for good stiffness; PETG or ABS/ASA are recommended for better temperature resistance near the door.