WTV020-SD Micro SD Card MP3 Voice Module (Audio Playback Module with Micro SD Support)

The WTV020-SD Micro SD Card MP3 Voice Module is a compact audio playback module designed for embedded systems, voice prompts, and DIY electronics projects. Based on the WTV020 voice processor, it supports audio playback from a Micro SD card and offers multiple control modes, including serial control, key control, and standalone playback (module dependent). The module supports WAV and AD4 audio formats stored on a FAT-formatted Micro SD card, making it suitable for voice announcements, alarms, interactive devices, toys, home automation, and industrial control systems. It can be easily interfaced with Arduino, ESP32, STM32, PIC, and other microcontrollers.

Key Features -

• Based on WTV020 voice playback IC

• Micro SD card audio storage

• Supports WAV and AD4 audio formats

• Multiple playback control modes (Module Dependent)

• Serial and key control support

• Compact PCB module

• Low power consumption

• 16-bit DAC and PWM audio output

• Suitable for voice prompts and sound effects

• Ideal for embedded audio applications

Specifications -

• Product type - Audio Playback Module

• Module model - WTV020-SD

• Storage media - Micro SD Card (Up to 1GB Recommended)

• Supported file system - FAT

• Supported audio formats - WAV and AD4

• Audio output - 16-Bit DAC and PWM

• Operating voltage - 2.6V to 3.6V DC

• Communication interface - Serial / Key Control (Module Dependent)

• Mounting type - PCB Module

• Operating temperature - Standard Ambient

Applications -

• Voice announcement systems

• Smart home devices

• Industrial automation

• Interactive toys

• Alarm systems

• Embedded electronics

• Educational projects

• Audio notification systems