The NK307PON OPM is designed based on ultra-low power single chip microcomputer and color code break screen, with an integrated filter, which can simultaneously test the optical power value of voice, data and video signals. The way it works is to extract a small part of optical signal online at any location in the PON network, which can be measured during the entire FTTx service opening, maintenance and detection stage, reliable verification and ensure that network communication requirements are met. The NK307PON OPM can set 10 groups of judgment thresholds, provide pass, warning or fail status indication for each wavelength, and can save the test results for easy review of the test results, which is ideal for PON network engineering, construction and maintenance.