1ACCURATE AND PORTABLE: Optical power meter is accurate in measurement with an error of less than 0.2dB, pocket design, mini and compact. Equipped with LED lights, which is more convenient to check the line construction in the dark 2APPLICABLE INTERFACE: Mini optical power meter support network line sequence measurement, signal transmission judgment, universal interface design, suitable for SC, ST, FC interface 37 WAVELENGTHS: Optical power meter with automatic wavelength memory function, a total of 7 wavelengths, 850, 980, 1300, 1310, 1490, 1550, 1625 nm 4THRESHOLD WARNING: Fiber light meter support threshold setting and automatic judgment. After setting the threshold, the screen display a red warning when the measurement result is lower than the set value 5MULTIPLE FUNCTIONS: Optical power meter visual fault locator support network testing, accurately measure network sequence, determine signal transmission, and facilitate portable storage to prevent loss 1 x Optical Power Meter 1 x Carrying Bag