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DOM RS Sigma Our best selling mechanical system


DOM RS Sigma Half cylinder is a reliable locking system offering a high level of security, ensuring your property and belongings are kept secure. Available as a master key system, the RS Sigma can help you plan, organise and secure even the most complex buildings with ease. It offers you all the convenience and peace of mind that you'd expect from a modern master key system.

In an ever-changing world, flexibility is essential. DOM RS Sigma can match any cylinder size requirements you need thanks to its modular technology. Every component can be configured to match your needs perfectly. Using the DOM ClipTag, RS Sigma can be easily integrated into any new or existing digital locking solution. No matter what the future holds, DOM RS Sigma is future-proof, protecting your investment long-term.

Watch the video : how to measure a cylinder?


  • BS EN 1303 certified - tested and passed all British Standard requirements for security.
  • Available in European, Oval and Scandinavian profiles.
  • High-security cylinder, utilising advanced locking technologies to help protect against modern break in techniques.
  • Compatible with all UK standard padlocks
  • Can be integrated into existing digital access control systems using the DOM ClipTag.
  • Modular technology allows you to fulfil any cylinder size needed.
  • Trademark protected locking system.
  • Available in Sigma Plus dealer profile.
Conventional Key System
Single Coded
Master Key System
Grand Master Key System
Certification EN 1303
Certification Fire Resistant
Certification SKG 2 Star
Anti Bump Protection
Anti Pick Protection
Anti Pull Protection
Registration Card

Suggested application of use

Airports, Education, Financial, Homes, Hospitals, Industrial, Medium to Large Sized Businesses, Offices, Plants, Public Buildings, Small to Medium Sized Businesses, Hotels



Key TypeConventional Key System
Registration CardYes
Total Number of Locking Elements18
MKS PossibilitiesSingle Coded, Grand Master Keyed, Central Locking, Master Key
Anti Drill Protection HousingYes
Maximum Number of Lateral Elements12
Maximum Number of Upper Elements6
Number of Active Locking Elements6
Number of Ant Bumping Elements2
Number of Anti Picking Elements2
Number of Passive Elements12
Standard Warranty5 Years
Standard FinishMatt Nickel
Standard Housing MaterialBrass

EN 1303:2015160B0C6D
A2P Rating1 *
VdS 2156:1 ClassificationAZ
SKG Star Rating2 *

Standard FinishMatt Nickel
Optional FinishesMatt Chrome, Bright Chrome, Matt Brass, Bright Brass, Antique bronze, Dark Bronze, Gold, Bronze, Black
Standard Housing MaterialBrass
Key MaterialNew Silver
Standard CamDIN
Optional Cams10 Teeth Gear Cams, 14 Teeth Gear Cams , PM1, PM2

Knob variations

DOM K1 Knob


DOM K3 Knob


DOM K4 Knob


DOM K5 Knob


DOM K6 Knob

K6 - Standard knob

Available colors

DOM Cilinder Dull Nickel

01 Dull Nickel - Standard color

DOM Cilinder Matt Chrome

03 Matt Chrome

DOM Cilinder Bright Chrome

04 Bright Chrome

DOM Cilinder Satin Brass

05 Satin Brass

DOM Cilinder Polished Brass

06 Polished Brass

DOM Cilinder Light Oxidized Bronze

07 Light Oxidised Bronze

DOM Cilinder dark oxidized antique

09 Dark Oxidised Antique

DOM Cilinder Mat Black

17 Velour Black Chrome

DOM Cilinder Gold Plate

25 Gold Plate

27 Matt Black Chrome

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