There are also data loggers which can be used to test the optimum conditions for specific products or surroundings. In particular, temperature & humidity data loggers are often used in pharmaceutical industries to monitor the conditions in which drugs & medicines are kept. Not only storage, but during the transit of goods, testo transport data loggers are useful to measure the transport conditions. The range of data loggers is very extensive. A USB data logger can ensure particularly easy handling, and then there are mini temperature & humidity loggers such as 174 H & 174 T for continuous monitoring to loggers with multi channels for connecting external sensors & thermocouples, like testo 176 H2, 176 T4. These instruments are the most convenient and pocket friendly solution for various applications.