In this paper we present a pair of operators (t-norm, t-conorm) dual with a strong negation with n-threshold $a_1,;{ldots}, a_n;{in}(0,1),;a_1;<;a_2;<;{ldots};<;a_n$. In this way we obtain an extension of operators with threshold, that are obtained for n = 1. The new pair is obtained from given one.