Features:
*Supports the FAT file system , SD card as storage medium ;
*Supports playback WAV format files and 4Bit ADCPM ;
*Support folder and automatically recognize the voice file playback ;
*Can play background music and commercials language ;
*Control methods are key control , second control and UART232 serial control ;
* WTV master chip has WTV020-16SOP and WTV020-20SOP two packages , both of which are compatible;
*Can play any segment of speech;
*Working voltage : DC2.6 ~ 3.6V;

Product Overview:
WTV020 plug-in SD card Voice module, the main chip selection WTV020-16S and WTV020-20S package chips. Voice updates directly through an SD card reader on a PC replacement. Control is also an SD card stored in TXT file changes. The module supports the FAT file system. Support and ADPCM WAV file playback. Supports two-wire serial control mode, the key way and UART232 serial manner . Automatic speech recognition and speech sample rate format.

Package Included:
1*WTV020-SD U Disk Audio Player MP3 Sound Module

Tip If the sound module does not play native MP3 files, but only a specific (library for WTV020-SD-16P audio module) format. You can export directly from Audacity with the following settings:
1.Mono file
Project Rate 16000 Hz (lower left corner)
File > Export Audio...
File type: Other uncompressed files
2.Format options
Header: WAV (Microsoft)
Encoding: Unsigned 8-Bit PCM
Save your file as 0###.wav where ### is 000 to 511