The F900 cylinder has a magnet in the encryption row, considered by the highest certification bodies as one of the most unmissable copy protections. The F900 cylinder is a vertical locking system which is also available in different locking and keyed alike versions.


The F900 with a large number of different mechanical profiles available, combines excellent potential for the creation of master key systems according to the security standards


F900 has 6 pins in the inferior coding row, of which 5 are encryption pins, while in one chamber the magnet is collocated and up to 4 pins in the lateral coding row from a length of 30-30 made of wearresistant special brass, per locking side. The trademark protection is registered at the Patent and Trademark Office. The protected lettering GERA is located as a cross-section in the key profile. A anti-pick protection is integrated in the profile cylinder. The surface of the cylinder body is matt nickel-plated or brass as standard. Three overlapping profile ribs of the plug increase the security of the profile cylinder against unauthorised openings (paracentric key profile). The keys are made of nickel silver. Optionally selectable features:

  • emergency and danger function
  • free cam
  • anti-Amok function (slipping clutch for knob cylinder)
  • conditional locking/classroom function
  • special finishes: Bright gold, Gera bronze (for modular profile cylinders)
Technical Features
  • Magnet in encryption coding row
  • Cylinder body and plug made of brass in the standard version matt nickel-plated
  • Suitable for installation in fire doors
  • Encryption pins in stainless steel
  • Counterpins in brass
  • Springs in stainless steel
  • Euro-profile cylinder (norm)
  • Locking cam made of sintered steel
  • Locking cam in min. 30° position (according to DIN)
  • In each plug there are 2 picking-resistant counterpins
  • Each plug contains 2 profile pins which interrogate the key lance
  • The drilling protection consists of a hardened steel pin in the cylinder body
  • Hardened steel strengthening bar for increased snap and cylinder extraction resistance
Standards and Certifications

Compact and modular version:

  • DIN EN 1303: 2015-08 (1|6|0|B|0|C|5|D)

Available in compact and modular design as:

  • single profile cylinder
  • double profile cylinder
  • pre-arranged for knob
  • knob cylinder

Available in compact design as:

  • scandinavian type
  • rim cylinder
  • round cylinder
  • lever round cylinder
  • microswitch