A double cylinder features both an internal and external keyway, making it a two-sided lockable cylinder.
The DOM rs Sirius® is a patent-protected Euro cylinder designed for locksmiths and security professionals who need secure, scalable master key systems. With exclusive patent protection until 2043, it offers long-term key control, helping you safeguard clients against unauthorised duplication for decades to come.
Perfect for both single-coded use and large, complex master key systems, the rs Sirius® is ideal for demanding environments such as schools, hospitals, airports, and government buildings. Built to perform at scale, it delivers outstanding durability, high drill and pull resistance, and unbeatable value.
Featuring DOM’s advanced Starline technology, rs Sirius® cylinders offer technical key copy protection, ensuring keys can only be duplicated with authorisation. Each key also includes an interchangeable coloured ball, allowing installers to assign colour codes for different user groups or access levels, simplifying on-site management and system organisation.
A longer key neck design ensures smooth operation even when used with escutcheons, and the solid construction provides dependable physical resistance for peace of mind in every application.
Patent Protection Until 2043 – Long-term protection against unauthorised key duplication.
Scalable Master Key Capability – Built to support everything from small systems to multi-site installations.
Colour-Coded Key Management – Each key includes a removable coloured ball to define user roles or access levels.
Drill and Pull Resistance – Robust construction to withstand common attack methods.
Starline Technology – Advanced technical key copy protection, exclusive to DOM.
Long Key Neck Design – Ensures ease of use with escutcheons or protective furniture.
Single or Master Keyed – Flexible to suit a range of security needs.
High-Value, High-Volume – Cost-effective performance for large-scale rollouts.
Airports, Education, Financial, Homes, Hospitals, Hotels, Industrial, Medium to Large Sized Businesses, Offices, Plants, Public Buildings, Small to Medium Sized Businesses
| Trademark Protection | Yes |
| Key Type | Conventional Key System |
| Registration Card | Yes |
| Reproduction Card | Yes |
| Total Number of Locking Elements | 17 |
| MKS Possibilities | Grand Master Keyed, Single Coded, Master Key, Registered Single Coded |
| Modular | Optional |
| Number of Active Locking Elements | 6 |
| Number of Ant Bumping Elements | 2 |
| Number of Anti Picking Elements | 2 |
| Standard Finish | Matt Nickel |
| Standard Housing Material | Brass |
| TS007:2014 | 3 * |
| SKG Star Rating | 3 * |
| Key Patent Protection | Yes |
| Key Patent Until (year) | 2043 |
| System Patent Protection | Yes |
| System Patented Until (year) | 2043 |
| Trademark Protection | Yes |
| Number of Keys | 2 |
| Key Material | New Silver |
| Standard Finish | Matt Nickel |
| Optional Finishes | Gold, Black, Bright Chrome, Matt Chrome, Matt Nickel, Satin Brass, Polished Brass |
| Standard Housing Material | Brass |
| Standard Cam | DIN |
