Product Overview

WTV020 plug-in SD card Voice module, the main chip is WTV020-16S and WTV020-20S package chips. Voice updates directly through an SD card reader that saved from a computer. Control settings can also stored in TXT file changes in the SD card.

The module supports the FAT file system. Support and ADPCM WAV file playback. Supports two-wire serial control mode, the key way and UART 232 serial manner. Automatic speech recognition and speech sample rate format.

WTV020-SD module can be used in automotive electronics (burglar alarm, reversing radar, GPS navigator, electronic dog, central control lock), intelligent home system, home burglar alarm, medical device voice prompts, music player, home appliances (Radio stations), communication equipment (telephone exchange, telephone), industrial control Fields (elevators, industrial equipment), toys and other fields.


  • Support SD card play, supports up to 1Gb TF card, FAT file system.
  • Chinese type IC – WTV020-SD-20S,WTV020-SD-16P
  • Support
    • WAV format files – 6KHz~16KHz
    • 4Bit ADCPM – 6KHz~32KHz、36KHz sample rate
  • 16bitDAC and PWM audio output
  • Maxium up to 512 audio files
  • Support control by serial bus from MCU or button control
  • Operating voltage: DC2.6 ~ 3.6V; static current – 16uA
  • Supports automatic detect folders and files;
  • You can play background music and commercials language;


Additional information

Weight 0.01 kg

3 reviews for WTV020 SD Music Player Module

  1. 3 out of 5


    This module requires rare uSD cards with <1 Gb capacity, it would be great if Electrodgragon was selling this module with compatible SD cards..

  2. DekedroLTU

    I think that 1Gb is not enough…

  3. 5 out of 5

    laplaciano_1 (verified owner)

    I finally make it work, datasheet is enough for do it. I used 2 Gb Memory and it worked fine.

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