SUN-OPM series power meter range by microcomputer control a large graphic LCD big screen, in 0.65 ~ 1.65μm band, from-70dBm ~ +23 dBm range for accurate measurements. The power meter can light power, light stability and other performance measurements. Can insertion loss, optical transmission, multi-functional optical reflectivity measurement, widely used in optical fiber communications, CATV, fiber optic sensing, optical information processing, is the construction of scientific research and testing instruments indispensable.