DEVIreg™520,521 and 522
The 520 series of thermostats had the option of Floor sensing, D520, Room sensing, D521 and combined Room and Floor sensing, 522. The current replacement is the DEVIreg 530, 531 or 532 respectively.
The 520 series of thermostats had the option of Floor sensing, D520, Room sensing, D521 and combined Room and Floor sensing, 522. The current replacement is the DEVIreg 530, 531 or 532 respectively.