In 2021, NEOTEK undertook the expansion of the existing network of accelerometers and geotechnical instruments at the Dafnozonara Dam owned by TERNA ENERGY. The accelerometer network was expanded by a new sensor and a Terminal Station, while the dynamic monitoring software was upgraded to current version. Regarding the geotechnical instruments, three crack meters and an electric piezometer were added, and these were incorporated to the existing automatic data logger system.