CISA double bitted key locks for armoured doors offer high resistance to forced entry, thanks to their independent key bitting system and anti-picking system.
Protection against forced entry (lock).
"Independent key bitting" system. Every lever is controlled by a separate spring.
The system protects against tampering and picking tools (European patent) and is active on all six levers of the lock to provide greater protection against forced entry with picking tools (Bulgarian method).
The independent key bitting system offers more than 240 billion key differs (different keys). It is almost impossible to find two keys the same in circulation, a great advantage compared to double bitted key systems available on the market.
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