RS Sigma


RS Sigma

The DOM RS Sigma is the ideal locking system for customers who place value on high security whilst at the same time recognise the need for keeping costs down.

This 6 pin conventional locking system offers lock security class 6 and bore resistance class 2 in accordance with DIN EN 1303 and its trademark protection ensures a secure long-term investment. 2 keys are provided as standard.

Available mastered and non-mastered, the RS Sigma is suitable for medium scale projects. For those customers who wish to build and manage their own master key systems, the RS Sigma is also available as a dealer profile.

Product Features

Conventional Pin TechnologyGrand Master Key SystemDouble EntryAnti Copy ProtectionRegistration CardElectronic CompatibleTrademark ProtectionDIN EN 1303 CertifiedAnti Pick TechnologyAnti Bump TechnologyAnti Drill ProtectionAvailable in a Dealer ProfileAvailable in ModularAvailable in a selection of finishes


Security Type Conventional
Active Locking Pins6
Locking Elements6
Active Locking Discsn/a
Lock Authorisation Requests19
Minimum Effective Differs100,000
Patent / Trademark ProtectionYes
Registration CardYes
Anti-Pick ProtectionYes
Anti-Bump ProtectionYes
Anti-Drill ProtectionYes
Anti-Snap ProtectionOptional
Modular AvailableYes
Key MaterialNickel Silver
Available MasteredYes
Dealer ProfileYes, Sigma Plus
Included Number of Keys2
Key FinishSilver
Fixing ScrewIncluded


EN 1303:2005 CertifiedDescriptionGrades PossibleDetails
Category of UseRelated to frequency of use.Grade 1 - shall resist a torque of 2.5Nm and still be usable1
DurabilityDurability testing according to test cycles achieved."Grade 4 - 25,000 cycles
Grade 5 - 50,000 cycles
Grade 6 - 100,000 cycles"
Door Mass & Closing ForceNo requirementn/an/a
Fire ResistanceSuitable for use on fire/smoke doors according to fire testing BS EN1634-1."Grade 0 - not approved
Grade 1 - suitable for use on fire doors"
SafetyNo requirementn/an/a
Corrosion ResistanceCorrosion and temperature resistance testing to BS EN 1670Grades 0 to C, where C offers the greatest corrosion resistance within -20°C to +80°CC
Key Related SecurityMeasures key related securityGrades 1 to 6 where grade 6 offers the greatest security6
Attack Resistance (optional extra?)Measures attack resistanceGrade 0, 1 or 2, where grade 2 offers the highest attack resistance2
VdS certification (optional extra?)

Technical Data

Lock & Key Technology

  • Each side of the lock has 6 sprung, solid tumblers, arranged axially
  • Comprises of 12 sectionally arranged core and housing pins.
  • Solid pin tumblers with a minimum diameter of 2.7mm, made from tempered bronze/steel, hardened and chemically nickled.
  • Smallest locking unit across the pin tumblers, solid pin with a minimum height of 0.8mm.
  • Waisted core and housing pins.
  • Truncated cone pin heads to ensure the bolting and closing action of the lock.
  • One-piece cylinder housing made from solid brass, surface treated with several galvanised layers, high protection against corrosion, optional modular construction.
  • Cylinder core made from solid brass, one-piece, with a minimum diameter of 13 mm.
  • Domed core head with guide funnel and core head groove for positively locked transfer of torque when closing and opening.
  • Paracentric, two-piece core and key profiling.
  • One-piece locking yoke made from sintered steel.
  • Key made from nickel silver, non-corrosive.
  • Vertical keyhole.
  • Up to 19 lock authorisation requests per key.
  • Key profile with optimised angle cuts of the flank angle.

Key Security

  • Grade 6
  • 100,000 Minimum number of effective differs
  • 6 Minimum number of movable levers, pins or discs.
  • No coding on key could disclosure combination
  • Torque resistance of plug fixed at 15Nm

 Attack Resistance

  • Grade 2 (Optional / Modular)
  • Reisitance to drilling for 5 mins
  • Resistance to chisel attack (40 defined blows)
  • Resistance to twisting attack (30 defined twists)
  • Resistance to plug/cylinder extraction for 15kN