Electronic double knob cylinder


Modern and flexible


The electronic double knob cylinder from Uhlmann & Zacher in a modern stainless steel design replaces a mechanical locking cylinder. The door is opened by transponders (cards, fobs) and, depending on the variant, also using radio switching modules or smartphones. The two radio technologies Bluetooth® Low Energy and 868 MHz are available for the product. In addition to new properties, existing mechanical locking systems can also be replaced by a modern wireless access system.


Versatile in use


With the double knob cylinder, different authorizations can be assigned on both sides. This makes it particularly suitable for through doors. It can be used in a large number of doors, for example wooden doors, plastic doors, tubular frame doors and glass doors.


Safe dismantling and battery change only with authorization


With an authorized transponder, the electronic knob can be separated from the cylinder housing, making it particularly easy to dismantle. Changing the battery and thus removing the cover is only possible with the appropriate authorization.


Energy efficient


The electronic knob cylinder is characterized by a long battery life with up to 80,000 openings per battery set.


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


  • Electronic authorization from two sides
  • Choice of different profile cylinder lengths
  • Certified according to DIN EN 15684
  • Little installation effort without drilling, no special tools required
  • Wireless assembly, since it is operated with batteries
  • Battery change and dismantling only with an authorized transponder
  • Long battery life, up to 80,000 openings with just one set of batteries
  • Permanent engagement (toggle function) without additional power consumption
  • Outdoor version, protection class IP66
  • PVD coating in gold, anthracite, bronze and black
  • Operation via smartphone (in conjunction with Bluetooth® Low Energy)
  • Offline or online operation via radio network
  • Bluetooth® Low Energy possible in conjunction with MIFARE®
  • Transponder technologies MIFARE®, LEGIC® and EM/HITAG
  • Compatible with OSS Standard Offline
  • Depending on the system (Clex prime, Clex private, Clex public) different requirements are met

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!


Data sheets
Clex prime CX6124 |
255 KB
Clex private CX2124 |
266 KB
Clex public CX8124 |
1 MB
Flyers & Brochures
Cylinder Brochure |
15 MB


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