While the TR-71Ui measures and records two channels of temperature, the TR-72Ui is designed to simultaneously measure and record temperature (1 Ch) and humidity (1 Ch).
The TR-71Ui/72Ui is a USB type data logger that enables the downloading of recorded data by connecting directly to a PC. Also, the newly added infrared communication function can now be used to collect recorded data from the TR-71Ui/72Ui without a PC.
By using a Data Collector TR-57DCi with infrared function, the collected data can be easily displayed in graph form without physically gathering the loggers, enabling the immediate on-the-spot checking of continually-changing data.