The narrow body version is specially designed to fit most Euro profile doors, even narrow profile framed doors and work with the majority of European mortise locks and cylinders.
SS-EH450 (E9450U00IMA6-S) is the iClass Version. Other ID technologies available include: i-Button, DESfire, DESfire EV1, Mifare, Mifare plus, Mifare Ultralight C, Inside Picopass, Legic, HID iClass, SKIDATA