PPM LED peak program meter module can receive and convert analog audio signal and program signal transmission lines and produce the desired audio power, to achieve PPM peak program level meter peak column display or point explicit, and to achieve signal peak hold display. Display board with the adjustment of parts, you can adjust the sensitivity of the transmission channel, easy to adjust the dynamic range display. Audio input can be provided by fitting harness or DG350 PH port directly connected to the column, the signal is connected to the front (line) or amplifier outputs audio device via peak detection, amplification and software processing after transfer, sending LED bar graph display. Because this display panel has a wide band impedance matching, it can be widely used in audio equipment output audio system, mixer output, the program signal transmission lines, power amplifier output and program recording during peak program level of volume display . Can better monitor the peak signal level, so avoid making audio equipment generates over modulation and overload. Adaptation wide range of display board power, low power consumption, light beam can use red, green, yellow and other colors can also be used in two (or more) colors are shown to represent each functional area and increase the visual effects program.