These sauna thermometers measure room temperature to well over 200° F. While electric sauna stoves are mostly accurate, a thermometer really helps if you're using a wood burning sauna heater.
And if you're pouring water on the hot sauna rocks to create steam, hygrometers measure humidity in traditional sauna.
Q: Where's the best place to hang my sauna thermometer?
A: We mount our sauna thermometer about least 4 feet away from the heater and a couple of feet from the ceiling. Also, not too close to your sauna door.