ElitechRC-51 Digital Temperature Data Logger USB Reusable 32000 Points - 5 Pack

We purchased 5 of the RC-51 data logger thermometers to validate shipping containers that are used to transport refrigerated products. We will be ordering more to monitor each shipment. The software used to configure the data loggers is fantastic... easy to install and use to configure the device parameters. The software is also used to read the data points from the data logger automatically when it is plugged into the computer usb port. As soon as the data is loaded a graph of the data is automatically produced along with a table of the time and temperature of each data point.The graph, table and device parameters are automatically used to produce a report which can be exported as a .pdf. Excel spreadsheet, a text file or another format I am not familiar with. The reports clearly document the temperature changes over the duration of the validation period (or shipment).The work effort to configure the data logger and place it into a shipping container, then read the data logger to produce graphs takes only a few minutes of work effort. Doing this procedure manual (with a fraction of the number of data points that were logged) required several hours of work effort. The labor savings with a single validation was greater than the cost of the data logger.The RC-51 data loggers have many useful features:Wide temperature range (-30 to +70'CNist certified - Data readings can be set from 1 reading every few seconds to 1 reading every few hours (with a 1 minute time interval the data logger has sufficient memory to last 22 days. With a 15 minute interval there str sufficient memory to read temperature fluctuation for over 1 year - Each data logger has a unique serial so the software automatically tracks the identity of the data logger - Historic data read from a data logger is stored automatically by the software - There are 3 settings for how the device can be set to start recording - Nist certified - Waterproof and dust proof

I ordered 5 pack and received 3