1 Various options of controller, CON4, ST-135M and ST-135T
2 Time setting :user can set waiting time from 0 to 12 hours.
3. temperature setting:it can adjusted from 50-110 ℃ or 122-230℉
4. High temperature cut-off for both sauna room and sauna heater. Double safety protection
5 stainless steel shell is optional