WTV020 WTV020-SD WTV020SD-20SS Mini SD Card MP3 Sound Module
This module with MP3 mode, key mode(control 3 group of voice with volume adjustment or 5 group of voice), two line serial mode, and Loop play mode(after power on ,the module will play loop, with memory function in the mode) They are optional. Customers can choose one of the modes in a module. Also can be customized.