Wavelength memory function and user calibration to maintain long-term measurement accuracy. Wide wavelength coverage supporting 8 standard wavelengths including 850, 980, 1300, 1310, 1490, 1550, 1625, and 1650 nm for accurate measurements in various fiber optic communication scenarios. Measurement range from -70 dBm to +6 dBm for versatile testing capabilities. Enhanced usability with lighting for dark environments, automatic shutdown function, and selectable backlight. Versatile interface compatibility with FC, SC, and connectors, plus RJ45 testing for network cable inspection, displaying linear mW values and non-linear dBm indexes on a clear screen., Manufacturer: Akfldms