USB-500
USB-500 - Measure temperature, humidity, voltage, current, or event/state change
The USB-500 Data Logger Application comes with the device. You can set the logging rate and start-time, log data, plug the device into your computer's USB port, and download stored data.
You can then graph or print the logged data, or export the data to other applications for use in spreadsheets and reports.
Each USB-500 Series data logger includes a long-life battery. The data loggers use blinking LEDs of different colors to indicate their logging status.