DOM Sigma Plus

Sigma Plus


Saving without Compromise

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

For new construction projects or refurbishment work your building must be protected in the best possible way.

The DOM Sigma Plus offers outstanding drill and pull protection at an affordable price, providing you with a high quality security system that is virtually unique in its class.

Flexible Security Designed to Last

The extensive product range is also available in DOM modular and provides customers with all round flexibility and security. Learn More

The modular system offers a high amount of flexibility, enabling you to adapt all conventional and reversible key systems independently to the respective individual requirements.

Through the individual components which are always ready in your DOM installation kit you can immediately react to requests without any logistical efforts, thereby avoiding unnecessary waiting times.

The modular design provides an additional increase in the break-off values and length flexibility.

In addition the RS Sigma Plus can be combined with DOM electronic access control technology, thus increasing the scope for future development and expansion.

Your Advantages
  •  High level of security. The high number of locking authorisations (19) teamed with the 6 large control pins and horizontal profile pins protect against the use of unauthorised duplicate keys and forced entry.
  • Key copy protection. The design patented profile protection secures against unauthorised key copying.
  • High level of convenience. Easy to use due to ergonomically shaped key head.

If you would like to find out more, contact one of our experts here


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?)