WTV020M01 is a small module that can be used as an audio communicator in a managed circuit or can work as a regular player. It is equipped with a system (WTV020SD-20SS) for playing audio files from microSD cards. Before connecting, the module should be properly prepared for operation by soldering the 3.3V power supply pads. Product features FAT file support - microSD carrier Supports playing files in ADCPM 4bit format Recognizes voice files automatically Microprocessor support Saving data when turning off the power Loading a voice on a microSD card without the help of software Connection supports file playback (including mute connection) Technical data Capacity: 32M to 1G of microSD card capacity. Rechargeable Sampling Rate: 6kHz to 32KHz, 36KHz sampling rate with AD4 audio, 6kHz to 16kHz sampling rate with WAV Audio output: 16bitDAC and PWM Maximum Voice Storage: 512 files Supply voltage: DC 2.6 to 3.6V !!! Quiescent Current: 16 uA (SD card is not inserted) https://elecena.pl/product/22621266/wtv020-mp3-sound-player-module-with-sd-card-reader-arduino 2023-02-23 https://elecena.pl/product/22621266/wtv020-mp3-sound-player-module-with-sd-card-reader-arduino 2025-10-29