1. Large and improved time display screen showing time in hours and minutes
2. Large and improved time display screen showing temperature in Centigrade or Fahrenheit
3. Customer can preset the working time and the waiting time in A and B model
4. The temperature can adjusted from 50-110 centigrade or 122-230 Fahrenheit Sauna heater will Sequential heating system 5.Diagnostics - 8 LEDs on the controller show different working stages and operations
6. Extra switch for sauna room lamp
7. High temperature cut-off for both sauna room and sauna heater. Double safety protection