The PM Series Power Meters are designed for use with an Optical Source for performing optical loss measurements on fiber optic cables. The PM-102 series are designed for affordable budgest, but meet the basic demands for real world testing. With a smaller size and weight, it's easy to take these units into any enviroment. The PM-102A Power Meter is able to measure 6 wavelengths (850/1300/1310/1490/1550/1625) with power levels ranging from -60 to +3 dBm. The small size, wide measurement range, and dynamic range make the PM-102A an excellent choice for any telecom technician or fiber optic contractor. Features: - Reference function - Backlight for easy operationin low light - Interchangeable(SC/ST/SC) connectorSpecification: Standard Accessories: FC/PC, SC/PC, ST/PC interchangeable connector, manual, travel bag, worldwide compatible AC/DC adapter, and test report.