I am considering buying some complete slightly used simplex 1021B locksets. These are the 5 vertical pushbutton locks with SFIC key override in the knob. Seller readily admits he is not an expert and says he "thinks" they allow passage function. Kaba literature for the 1000 series gives directions to enable passage function on the 1031 41 51 and 61 but not the 21. Does this lock allow for passage function?
Seperate question: Are there any known security problems with this particular lock? I'm not talking about vulnerabilities of the SFIC key override which I am familiar with and consider acceptable. I'm talking inherent security vulnerabilities with the simplex 1000 series design itself.
Thanks