The TRAFIKA indoor thermo-hygrometer has a large LCD display (9 x 6 cm) that allows for quick reading of the data. The display is divided into three sections: IN temperature - OUT temperature, humidity temperature and max and min humidity. The temperature can be displayed in degrees Celsius from 0° to 50°C or in Fahrenheit from 32°F to 122°F. It also indicates the maximum and minimum indoor and outdoor temperature and the maximum and minimum humidity in percent. The device has a 2.5 meter long temperature probe. The screen is green to allow nighttime readings and not to stress the plants. The backlit green screen is not constantly on, but only lights up while the measurement is being taken.