Since 1989, DeltaTRAK, Inc. has been developing and manufacturing high quality portable test instruments such as chart recorders and data loggers that monitor / record temperature and humidity. DeltaTRAK has subsequently developed affordable and dependable digital probe and infrared thermometers to provide better end-to-end cold chain management solutions. In addition, they have added state-of-the-art data download / management / analysis software to our data logger product line.