The data logger with USB interface PCE-428-EKIT-ICA, from the field of environmental measurement technology, is an optimal sound level meter for measurements at workplaces, construction sites, in traffic, airports, etc. The data logger with USB interface is equipped with an octave band frequency filter. Optionally, the data logger with USB interface can be upgraded with a 1/3 octave band filter. The additional kit for outdoor sound measurement makes it possible to measure outdoor noise with a data logger with USB interface over a long period of time, even in the rain.