Levenhuk Wezzer BASE L30 Thermohygrometer. The Levenhuk Wezzer BASE L30 is a compact and easy-to-use digital thermohygrometer with a magnetic back. It is useful in any household and makes a very practical gift for everyone. With this instrument, you can check the exact values of temperature and humidity in the room, as well as monitor and analyze trends in their changes. The maximum and minimum values are stored in the unit's memory and displayed on the black-and-white LCD screen. Features: - Smart, battery-operated digital instruments - Measurement of temperature and humidity - Trend display and overall comfort level rating - Two mounting options: magnetic and wall-mounted.