The PDF USB logger by Cold Chain Solutions offers you an economical solution for logging your temperature data. The PDF logger is a single use device, easily activated by pressing the start button. The output is reported in PDF and no special software is needed. The logger is suitable for temperatures ranging from -30℃ until +70℃, has excellent accuracy and can hold up to 8192 readings. A copy of the factory calibration certificate and manual is retained on within the logger.