This humidity tester shows the time, the temperature, and the moisture level of the room where it has been kept. So, it shows 3 variables at a time. 2. Provides correct results Managing the balance in the environment of your habitat is easy with this scientifically designed hygrometer. 3. Use it everywhere You can use it anywhere, in the hotel room, in your office, at home, etc. for sparing yourself from many health issues.