Piecewise linear differential system with a center-saddle type singularity

In this paper, we show the existence of piecewise linear differential system with two zones in the plane having the following features: it has a center and a saddle singularity point in each region; the boundary of the zones is an analytic curve; for any given positive integer n∈N, the system has exactly n limit cycles; and all the limit cycles are hyperbolic.