STEVAL-MKI141V2 is a HTS221 humidity sensor adapter board for standard DIL24 socket (full pinout). It is an adapter board designed to facilitate the evaluation of MEMS devices in the HTS221 product family. The board offers an effective solution for fast system prototyping and device evaluation directly within the user’s own application. The board also offers an example reference design for custom PCB implementation. The STEVAL-MKI141V2 can be plugged into a standard DIL 24 socket. The adapter provides the full HTS221 pinout and comes ready-to-use with the required decoupling capacitors on the VDD power supply line. This adapter is supported by the STEVALMKI109V2 motherboard which includes a high-performance 32bit microcontroller functioning as a bridge between the sensor and a PC, on which it is possible to use the downloadable graphical user interface (Unico GUI), or dedicated software routines for customized applications.