Built with rust resistant 403 stainless steel housing, alloy, and shatterproof glass to withstand extreme humidity and high temperature environments without fogging Perfectly suited for saunas, traditional wood fired saunas, or rooms where temperature humidity balances enhances therapeutic benefits and user Engineered for long term in harsh conditions, this high temperature resistant sauna meter combines industrial grade materials with clear analog readability for effortless maintenance Ideal for health conscious homeowners, sauna enthusiasts, and wellness centers seeking environmental tool for commercial Accurately monitor temperature ( 70-250°F) and humidity in saunas and rooms with this sauna thermometers and hygrometer combo, ensuring optimal and comfort for home spas