This sauna features powerful Red Light Therapy for enhanced health and wellness benefits When indoor ambient temperature is 68°F, target temperature range is between 110°F – 140°F. Please note: The sauna max temperature setting is 151°F, howeveryour sauna may only reach 140°F depending upon ambient temperature and sauna environment. Our infrared saunas are for INDOOR USE ONLY. They are not meant for outdoors, and in doing so, voids the warranty.