Hello Thomas,

    What I meant is that with the original Lectron modules, contacts were always very good.

    This was achieved by silver plates with a magnet behind.
    When 2 adjacent modules are mpounted, the magnets attract each other and the silver plates are pushed together, providing a solid contact.

    After a lot of use, the contact plates can easily be cleaned with a moisturised soft cloth with a little dish detergent solution with water.

    Corrosion doesnt exist but you should avoid acid or other corrosive solutions to be in contact with the silver plates.

    In other words, it should be hard to replicate those contacts without original parts but I’m pretty sure there could be other contact systems like pins as I proposed in above thread.

    Many greetings,