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 KSA supplies USB Data Loggers in Saudi Arabia in regions such as Riyadh, Al Khobar, Dammam, Jeddah, 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.