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USB-2 Self Contained Humidity / Temperature Data Logger

The USB-2 data logger measures and stores up to 16,382 relative humidity and 16,382 temperature readings over 0 to 100%RH and -35 to +80C (-31 to +176F) measurement ranges. The user can easily set up the logging rate and start time, and download the stored data by plugging the module straight into a PCs USB port and running the included software. Relative humidity, temperature and dew point (the temperature at which water vapor present in the air begins to condense) data can then be graphed, printed and exported to other applications.


The data logger is supplied complete with a long-life lithium battery, which can typically allow logging for a year. Status indication is via flashing red and green LEDs. The logger is protected against ingress from water and dust to IP67 standard when the plastic cap and seal are fitted.


This device is small enough to be included in shipping packages to determine if perishables have sustained out of range temperatures and accurate enough to perform scientific analysis.


The data is saved in comma delimited format with date/time stamps for easy import into other spreadsheet, database, and graphing applications. See a sample data file here (.txt format)

* Depending on sample rate, ambient temperatures and use of alarm LEDs
** This specifies the overall error in the logged readings, for relative humidity measurements between 20 and 80%RH
*** This specifies the overall error in the calculated dew point, for realtive humidity measurements between 40 and 100%RH at 25C


Includes waterproof cap, battery, software and manual.


EasyLog USB Temperature/Humidity Data Logger $71.95
(List Price $82.00)
Protective Case for EL-USB-1 Data Logger* $17.95
(List Price $21.00)
* Can also be used on USB-2 & USB-2+ for temperature only applications. Humidity readings will be incorrect while logger is inside case.
Easy Log Data Logger Replacement Battery (Fits Most Models*) $3.95
(List Price $4.50)
* excluding USB-1-PRO, USB-1-RCG, USB-LITE & USB-RT
Specification Sheet / Manual
USB-2 Temperature Datalogger

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