An important factor when choosing a data logger for temperature and humidity is the question of where you intend to use it. The accuracy of measurement may be more important in some areas than in other categories.
If you use the data logger for checking rooms to monitor good indoor air quality, the accuracy is less important than in a special cooling chamber. It is particularly important to get precise values when it comes to cold chain compliance.
However, if you just want to measure the ambient conditions in an office, the values do not need to be exact down to the decimal point. The product information concerning measuring accuracy is therefore a point to be considered when it comes to choosing the appropriate instrument.