Tempsen Alpha TUX Dry Ice USB PDF Data Logger designed to operate and record temperature data within shipments of dry ice. A probe less data logger has an integral temperature sensor, enabling the user to simply place the device into a container of dry ice. An alternative would comprise of a probe, cable run and an external data logger placed in ambient temperature conditions. Using an externally mounted temperature data logger can take longer to install and render the probe and data logger prone to damage due to its position on the outside of the insulated shipping container.