In MY experience this product was disappointing... Thanks to my knowledge gained in practice, I was able to tell that this controller is just not up to par. Industrial and Scientific it may be advertised as, but it falls short in every way. The only pro I can think of is that it was easy to install. The cons are numerous: insufficient programming options, subpar performance, and poor overall quality. Save your money and invest in a different product in the HVAC Equipment category of Material Handling Products..