Battery precision: Engineered with an aluminum frame and glass lens, this wallmounted sauna thermometer hygrometer delivers accurate temperature and humidity readings without batteries or electrical power. Clear value for multiple users: Ideal for sauna owners, spa operators, and wellness enthusiasts seeking a reliable climate control solution in rooms. Readable and spacesaving design: Corrosionresistant mechanical construction with oversized analog dials provides easy visibility, while its wallmount form offers a compact footprint for continuous environmental monitoring. Lowmaintenance and durable: Lowmaintenance mechanical operation ensures years of dependable performance in humidity environments, making it an essential sauna room accessory for mindful users. Use scenarios: Home sauna: Install on the wall to quickly assess temperature and humidity before use. Spa or wellness center: Monitor conditions in treatment rooms or steam areas to maintain guest comfort. Fitness facilities or hotels: Provide reliable climate readings in sauna or relaxation spaces for consistent user experience.