Compact half cylinder

The compact half cylinder is an electronic locking cylinder, which is especially characterised by its compact size. The product is also suitable for electronic access control in environments where there is relatively little space to the wall because of the small handle diameter of 33.0 mm. Different locking lugs enable the installation in a great variety of applications. In this way, the compact half cylinder can be installed in key switches for garage doors, padlocks for containers or server cabinet locks, for example. The identification can be done by a passive transponder or by an active transponder with its own power supply (not in the system Clex public).

The product offers additional advantages through its special security features. All the security components, such as the coupling, gears and motor are located in the protected area in the cylinder. The electronics and cylinder are rigidly coupled, the electronics unit is safely housed in the core of the cylinder. A mechanical drilling protection is also integrated by default. These security features additionally characterise the compact half cylinder as a security cylinder.

The version of the compact half cylinder with protection class IP66 moreover withstands strong weather conditions and thus enables the use in unprotected outdoor areas. The security version characterised by an advanced drilling and pulling protection is especially suitable for this purpose.

Transponder technology

MIFARE® (13,56 MHz)

OSS Standard Offline

868 MHz Radio

Dust and waterproof according to protection class IP66 and thus protected against powerful water jets.

Intrusion detection system (IDS) - connection possible

Clex prime

To the system page

Clex private

To the system page

Clex public

To the system page


  • Time switches or weekly schedules are already integrated
  • Can be connected to an IDS module
  • Permanent engaging (toggle function) without additional power consumption
  • Up to 60,000 actuations with one battery
  • Battery can be replaced using a battery replacement tool to open the cover
  • Wireless
  • Easy installation of the mechanical knob using grub screw
  • Various profile cylinder lengths
  • Outdoor version (IP66)
  • Security version with advanced drilling and pulling protection




Clex prime  CX6166


Clex private   CX2166


Clex public   CX8166

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