Function introduction • Small and portable, easy to carry • Five dose values can be measured simultaneously, measuring will be more simple and precise • Apply to multiple UV phototherapy instruments • Flexible fixation, suitable for testing different parts Diameters • Dimension: 1 53mm x 60mm x 1 5mm 9 Single aperture size(regular Hexagon)side length:10mm • Aperture quantity: 5 • Dose output ratio (aperture 1 to aperture 5 decreasing): 100%, 80%, 60%, 40%, 20%