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DOM ix TwinStar Two roles - double the security


DOM ix TwinStar® is a high-end secured mechanical locking technique that is almost impossible to crack. Experience all the knowledge, heritage and innovation of DOM combined in one reversible key system.


  • Available with 360° freewheel functions (333FRL).
  • If required also lockable if the key is inserted from one side (333T).
  • Can be incorporated into all DOM Masterkey systems.
  • Optional: seawater-resistant version.
  • Doors with different security classes can be combined and opened with a single key (keyed alike).
  • Available with 2-in-1 function. With the help of a supplied spare key, it is possible to switch off a lost (mother) key. This eliminates the need to replace all your locks in case of theft or key loss.
  • Pleasant key operation by wide key head.
  • The extended key is matched to all common security fittings with anti-core pulling function
Reversible Key System
Master Key System
Grand Master Key System
Certification EN 1303
Certification Fire Resistant
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


Technical features

Key TypeReversible Key System
Registration CardYes
Total Number of Locking Elements21
MKS PossibilitiesSingle Coded, Grand Master Keyed, Master Key, Central Locking
Anti Drill Protection HousingYes
Standard Warranty2 Years
Maximum Number of Lateral Elements10
Maximum Number of Upper Elements9
Number of Active Locking Elements11
Number of Ant Bumping Elements8
Number of Anti Picking Elements8
Number of Moveable Elements2
Number of Passive Elements10

EN 1303:2015160B0C6B
VdS 2156:1 ClassificationBZ+
Key Patent ProtectionYes
Key Patent Until (year)2036
System Patent ProtectionYes
System Patented Until (year)2036

Standard FinishMatt Nickel
Optional FinishesBright Brass, Bright Chrome, Bright Nickel, Matt Chrome, Matt Brass, Gold, Dark Bronze
Standard Housing MaterialBrass
Number of Keys3
Key MaterialNew Silver
Standard CamDIN
Optional Cams10 Teeth Gear Cams, 14 Teeth Gear Cams , Cam Biffar, Swiss Cam, Spanish Cam 13.2 mm, Cam Corbin, Cam 90°

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