A data logger is an electronic device that records measurements over time. Depending on the model and connected sensors, it can record temperature, relative humidity, water level, or other conditions. Logging intervals and data-access options vary by product.

Start with what you need to measure, the required measurement range and accuracy, and the conditions where the logger will be used. Then consider the logging interval, deployment length, power requirements, and whether you need local downloads or remote access to your data.

Use the model number printed on your logger to search the user manuals and quick start guides. Match the document to your model before following setup, maintenance, or battery replacement instructions.

Software compatibility depends on your logger or monitoring system. Check the product documentation and software compatibility information before installing an app, updating firmware, or choosing a cloud service.