TFA Thermo hygrometer dig.

With this practical little thermo-hygrometer, you can easily keep an eye on temperature and humidity and adjust them if necessary. The maximum and minimum values are stored and displayed at the push of a button. With two small magnets on the back, the thermo-hygrometer sticks to metal surfaces. If you want to set the device up, the foldable stand comes into play. The climate comfort display rates the comfort level of the currently measured temperature and humidity: a smiling face indicates that the climate conditions are optimal. A neutral or sad face points to moderate or poor conditions.

You can choose between four different areas of application for the thermo-hygrometer: indoor climate, musical instruments, turtles, and humidor.

Indoor Climate: Whether we feel comfortable and cozy indoors largely depends on the quality of the indoor air. Controlling indoor temperature and humidity through targeted heating and ventilation creates a pleasant and healthy living climate and even saves heating costs. A room temperature of 19 to 25 °C and a relative humidity of 40 to 60% are considered comfortable by most people and minimize health risks.

Musical Instruments: Wooden musical instruments such as pianos, violins, and guitars are sensitive to climatic conditions. Wood is a hygroscopic material; at high humidity, it absorbs moisture, and objects can warp. If the surrounding air is too dry, moisture is drawn out, leading to cracks. The optimal climate conditions for many musical instruments are 18 to 24 °C and 45 to 55% relative humidity. Please check if these values are also applicable to your own instrument. Important for storing musical instruments: the climatic conditions should remain at a consistently stable level.