With TQC Low Voltage Pinhole Detector, users can inspect coatings for small defects such as holidays and pinholes using wet sponge technique. Unit is available in Basic Model LD8100 with voltages of 9 and 90 Vdc, and Advanced Model LD8015 with voltages of 9, 24, 67.5, and 90 V. Measuring max coating thickness of 500 µm, detectors include color display with battery indicator and menu-based interface, automated self diagnostics, and smart power saving feature.