  We consider an extension of the Standard Model within the frame work of
Noncommutative Geometry. The model is based on an older model [St09] which
extends the Standard Model by new fermions, a new U(1)-gauge group and,
crucially, a new scalar field which couples to the Higgs field. This new scalar
field allows to lower the mass of the Higgs mass from ~170 GeV, as predicted by
the Spectral Action for the Standard Model, to a value of 120-130 GeV. The
short-coming of the previous model lay in its inability to meet all the
constraints on the gauge couplings implied by the Spectral Action. These
shortcomings are cured in the present model which also features a "dark sector"
containing fermions and scalar particles.
