Merkur 401 is a patented locking system with good security, key control and full flexibility. That we choose to name our locking system with the name Mercury 401, has arisen from our desire to constantly challenge the existing and have ambitions to make it a little better. The ASSA ABLOY universe will change constantly - because patents expire, new technological possibilities arise and we are constantly getting wiser.
The number 401 refers to Mercury's position in our safety barometer. Mercury is placed in our second highest security category (category 4), which is a good level of security. Merkur 401 is suitable for housing associations, sports clubs, holiday homes, etc., and can advantageously replace older locking systems such as Series 500 and Series 600.