Ideal for home sauna owners, spa operators, and elderly users needing clear visibility of environmental conditions during therapeutic heat Features large font analog dials for resistant readability, mechanical sand timer for control, and knotty pine construction that resists warping in high heat sauna environments This sauna hygrometer thermometers with sand timer combines temperature / humidity and time management in natural pine wood, eliminating battery needs while blending seamlessly into rooms The wooden hygrometer merges Scandinavian sauna tradition with functional double scale measurement a natural centerpiece that enhances through visible room metric and timing Perfectly suited for integration in saunas, and commercial wellness facilities requiring analog solution, Manufacturer: Hsioluted