The data of humidity and temperature can be stored or recorded with a USB data logger. The data so recorded can be downloaded by connecting the device with a computer USB port as it comes with a USB interface. Vacker Lebanon supplies USB Data Loggers in Lebanon in regions such as Beirut, Tripoli, Sidon, Tyre, Nabatîyé et Tahta, Habboûch, Djounie, etc. This article explains a USB data logger used for recording the temperatures mainly in life sciences, cold chain, food processing industry, pharmaceuticals and so on.