Temperature and humidity data loggers are among the most popular, and a range of product solutions exist to adapt to any application. Environmental temperature and humidity data loggers generally feature built-in sensors and are used to measure ambient temperature and humidity in many settings. Popular applications include calibration rooms, greenhouses, warehouses, basements, attics, and even cigar humidors. Other products that use connected temperature and humidity probes can extend temperature measurement range to very high or low levels, or simply fold a humidity and/or temperature measurement into a range of other measurements.