This premium electronic CodeLoxx cylinder provides more security, control and convenience at your door. It is operated using either the innovative digit ring or the usual ABUS Seccor chip key. When the digit ring is used, the four- to six-digit code can be entered by turning and pressing. The digit ring allows for keyless entry and is a safer option for cases where the key is lost or the door slams shut unexpectedly. A special advantage of this cylinder is the wireless module in the inside knob, which allows for incredibly easy operation of the alarm system and countless control functions in conjunction with the AE255F analysis unit. The cylinder has additional plating for even more protection against break-ins. The unique modular extension system guarantees maximum flexibility during installation, use or structural changes.