Go to content Go to footer Home Solutions Products Service About us Search Partner portal SEE Home Products Mechanical locking systems Mechanical locking systems The mechanical access systems from EVVA offer a suitable level of security for all types of buildings. Locking system MCS The keys in this locking system are equipped with four magnetic studs. They prevent illegal copying of the key. Locking system 4KS A locking system that is used wherever there are extreme conditions. Also suitable for locking systems with very complex structure. Contact