Brand CATALEX Model N/A Quantity 1 Color Blue + black Material FR4 Features It can play WAV music and audio; Power supply 4.75~5.25V; Interface: 5V or 3.3V; 4 x M2 screws positing holes which is easy for installation Specification The module is a WAV player module based on 12bit DA converter chip MDP4921. SD card can complete play mono not more than 22.1K sampling rate and not more than 16-bit way format file with the main control board. And it is with low SNR and the noise is little big when it works at a low volume so we should adjust the volume to a half circle above when we use it. If we use external power amplifier and make it works better. We can adjust the volume on the amplifier especially for some places which don't have high requirement for the sound quality like subway ATM machine electronic clock and other places with sound prompts. Application SCM experiment operation English Manual/Spec Yes Packing List 1 x Player module 1 x English manual