  Hawking radiation spectrum via fermions tunneling is investigated through
horizon radii of Pleba$\acute{\textmd{n}}$ski-Demia$\acute{\textmd{n}}$ski
family of black holes. To this end, we determine the tunneling probabilities
for outgoing and incoming charged fermion particles and obtain their
corresponding Hawking temperatures. The graphical behavior of Hawking
temperatures and horizon radii (cosmological and event horizons) is also
studied. We find consistent results with those already available in literature.
