The Clex OSS door fitting is compatible with numerous European lock standards. The various widths allow for use in all common doors, including wood, steel, and aluminum, as well as narrow-frame doors with a backset of more than 25 mm. This makes the Clex OSS door fitting suitable for both new buildings and existing properties, and its timeless, sleek design adapts to any environment. The reading unit with the communication electronics, as well as the mechanics and power supply, are located in the door handle.