  We study the mirror symmetry of abelian 3d $\mathcal{N}=2$ theories with
mixed Chern-Simons levels by turning them into $\mathcal{T}_{A,N}$ theories
that are defined as $N$ copies of $U(1)-[1]$ theory coupled together by mixed
Chern-Simons levels $k_{ij}$. We find that $\mathcal{T}_{A,N}$ theories have
many mirror dual theories with different mixed CS levels and FI parameters. As
an example, we analyze $U(1)_k+ N_C \,\mathbf{C} + N_{AC} \, \mathbf{AC}$
theories by transforming these theories into certain $\mathcal{T}_{A,N}$
theories and find many equivalent effective Chern-Simons levels. Finally, we
analyze mirror symmetry for theories corresponding to knots. In this work we
use sphere partition functions and vortex partition functions to derive dual
theories.
