4D.TWO® is a multispectral sensor platform for industrial laser process monitoring. The sensor simultaneously captures process emissions in the visible (VIS) and near-infrared (NIR) spectral ranges and combines them with environmental and motion data to provide a comprehensive view of the manufacturing process. Together with Lossless Technology, flexible integration options, and seamless connectivity to 4D Photonics software solutions, 4D.TWO enables reliable monitoring and deeper process understanding across a wide range of laser applications.