Home > Shop > Types of Safes Locks > Key lock + Mechanical Combination
Dual locking systems provide an extra layer of security by requiring two independent methods to access the contents of a safe. At Arcas Gruber, our key lock + mechanical combination safes are designed for users who need maximum reliability, especially in power-independent environments.
With a physical key lock and a rotating combination dial, this classic yet highly effective system prevents unauthorized access and ensures long-term durability — ideal for homes, offices, and commercial applications.
Key Lock + Mechanical Combination Safes: Maximum Security Without Power Dependency
For those seeking robust, low-maintenance protection, key + mechanical combination safes offer a time-tested solution. By combining two locking mechanisms — a physical key and a mechanical combination dial — users benefit from dual authentication that significantly reduces the risk of unauthorized access.
How the Dual Lock System Works
The safe requires two sequential actions to open:
- Step 1 – Combination Entry: Rotate the dial to the correct sequence of numbers.
- Step 2 – Key Insertion: Insert and turn the physical key to unlock.
This system ensures that even if one method is compromised, the other remains a barrier — offering true dual-layer security.
Advantages of Mechanical + Key Locks
- No batteries required: Fully mechanical operation ensures access even during power outages.
- Reliable in harsh conditions: Resistant to electronic failure and humidity.
- Certified security: Available in Euro Grade certified safes up to Grade 5 and above.
- Long lifespan: Mechanical dials are known for decades of dependable use.
Use Cases and Applications
Arcas Gruber’s dual lock safes are ideal for:
- Jewellery shops and watch retailers
- Bank branches and cash rooms
- Corporate offices handling sensitive documents
- Private homes with high-value assets
Why Choose Arcas Gruber?
We have over 100 years of experience designing and manufacturing high-security safes. Our key + mechanical combination safes are crafted from reinforced steel, fitted with certified locking mechanisms, and tested to UNE EN 1143-1 standards for burglary resistance.
Whether for home or professional use, these safes offer unmatched durability, simplicity, and independence from electronic systems. Their mechanical reliability makes them particularly suitable for environments where power interruptions or digital failures must be avoided.
Key Features
- Dual locking system: key + mechanical dial
- Zero power dependency
- Certified according to European standards
- Available in multiple formats and sizes
Looking for maximum protection without the need for batteries or electronics? Discover our full range of certified safes and select the dual lock system that best fits your security strategy.



