Electronic double-knob cylinder

The double-knob cylinder is an electronic locking cylinder with a two-sided separate electronic authorisation. With the double-knob cylinder, access is controlled electronically from both sides of the door. Different access rights can be issued for both sides.

Various special lengths and an outdoor version with protection class IP66 are also available. 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). In addition to the proven radio version (868 MHz), a version with Bluetooth® Low Energy (2.4 GHz) is also available.

Transponder technology

MIFARE® (13,56 MHz)

Transponder technology

LEGIC® (13,56 MHz)

Transponder technology

EM/HITAG 125 kHz

OSS Standard Offline

868 MHz Radio

Bluetooth® Low Energy technology

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


  • Electronic authorisation from two sides
  • 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 80,000 actuations per side with one battery
  • Battery can be replaced only with battery replacement authorisation
  • Wireless
  • Modular design
  • Disassembly possible only with disassembly card
  • Various profile cylinder lengths
  • Outdoor version (IP66)
  • PVD coating in the colours gold, anthracite and bronze




Clex prime  CX6124


Clex private   CX2124


Clex public   CX8124

You can find further information in our download area:



Modular construction


Thanks to the simple assembly of the universally applicable knob module with Uhlmann & Zacher locking cylinders, quick on-site conversion is possible without any problems. The combination of inidivual components creates a variety of electronic locking units.


Find out more here!

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