RUIYAN RY3200 is a compact and an easy-to-use testing instrument for optical fiber networks, which can be used for absolute optical power measurements as well as for relative loss measurements in optical fibers. High sensitivity, wide dynamic range Mini Case protection design, compact and elegant, to prevent accidental damage to the meter drop detector. It features ingenious appearance, wide range of power measurement, high accuracy and user self-calibration function with high performance-to-price ratio. It allows to perform an official opacity test guided step by step by the software.