Based on our photometric observations in 2015–2016 and archival photometric data for the active red giant PZÂ Mon , we have found the main characteristics of the stellar surface : the unspotted surface temperature T _ { eff } =4730Â K , the spot temperature T _ { s } =3500Â K , and the relative spot area from 30 to 40 % .
The best agreement with the observations has been achieved in our three-spot model including a cool polar spot with a temperature of \sim 3500Â K as well as large and small warm spots with a temperature of \sim 4500Â K. The stable polar spot is responsible for the long-period brightness variations .
Its presence is confirmed by an analysis of the TiO 7054Â Ã Â molecular band .
The small-amplitude 34-day variability is attributable to the warm spots located on the side of the secondary component , which determine the relatively stable active longitude .