The Bosch GDH 1-17 hygrometer is a professional thermo-hygrometer designed for precise environmental measurements. It offers a variety of functions that make it possible to record important data such as air temperature, relative humidity, dew point, wet bulb temperature and absolute humidity in real time. The high-contrast colour LCD screen ensures that the measured values are easy to read, even in difficult lighting conditions. The device has a robust design and is ideal for use on construction sites, as it has a rubber-reinforced housing and an IP65 rating, which protects it from dust and water. The hygrometer is particularly useful for professionals such as architects, energy consultants and building services engineers who need to monitor humidity levels in different environments to ensure the efficiency of HVAC systems or to assess humidity levels prior to repairs. Real-time measurement of air temperature and humidity. High contrast colour LCD screen for easy readability. Robust design with rubber-reinforced housing. IP65 protection against dust and water. Adjustable threshold scale for relative humidity.