Thermo-Hygro Data Logger. Data storage for 60,000 measurement values. Status and alarm LED. Configurable storage rate (30 seconds to 24 hours). PDF file via USB interface. Holder and battery included. Easy data evaluation. The data logger is ready to use straight out of the box without additional software. You can easily retrieve the measurement values by connecting the device to a PC like a USB stick and opening the automatically generated PDF file. With the free software "LogConnect," you can adjust the measurement interval to your needs and perform additional evaluations. TFA Dostmann. With over 1,000 weather and measuring instruments, the German company TFA Dostmann is one of the leading companies in the industry in Europe. The TFA range is characterized by its own innovative technologies and exclusive designs, and it is continuously developed in collaboration with meteorologists, IT specialists, and designers.