Schmid & Partner Engineering AG Zeughausstr. 43 CH-8004 Zurich, Switzerland http://www.speag.swiss support@speag.swiss Dear valued customer, The "DAKV4.0_installer" from the download site https://www.speag.swiss/downloads/dak/dak-download/ contains DAK V_4.0.0, i.e., the latest software for our DAK-TL2 and DAK-R systems. IMPORTANT: We kindly recommend to carefully follow the steps described in this ReadMe file to ensure a smooth and successful installation of all software components. NOTE: It is not necessary to uninstall the previous software version of your DAK system. The current installer provides a complete installation of the new software by saving it in a separate directory to your system local hard disk. STEP 1: DAK software installation The software version number can be verified in the footer of the software user interface. The version will show as V4.0.0 after a successful installation. STEP 2: Read the new user manual to get familiar with the revised workflows for more accurate dielectric measurements before using the systems In case of additional questions, please do not hesitate to contact us by e-mail at support@speag.swiss. Kind regards, The DAK development team