---
product_id: 548257440
title: "DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card"
brand: "dollatek"
price: "Bs.255"
currency: BOB
in_stock: true
reviews_count: 10
category: "Dolla Tek"
url: https://www.desertcart.bo/products/548257440-dollatek-voice-sound-playback-module-arduino-mp3-player-module-uart
store_origin: BO
region: Bolivia
---

# 8MB onboard flash storage 5W Class D amplifier power UART & I/O multi-mode control DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card

**Brand:** dollatek
**Price:** Bs.255
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your sound game — small module, massive impact!

## Quick Answers

- **What is this?** DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card by dollatek
- **How much does it cost?** Bs.255 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/548257440-dollatek-voice-sound-playback-module-arduino-mp3-player-module-uart)

## Best For

- dollatek enthusiasts

## Why This Product

- Trusted dollatek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Durable Design:** 35x35x5mm module built to withstand -20℃ to 85℃, perfect for cosplay, DIY, and professional projects.
- • **Robust 8MB Flash Storage:** Store up to 65,535 MP3/WAV files with easy USB update for endless audio customization.
- • **Versatile Multi-Mode Control:** Supports UART serial, I/O triggers, and single-bus serial control for seamless integration.
- • **Powerful 5W Class D Amplifier:** Directly drives 4Ω speakers with crystal-clear sound for immersive audio projects.
- • **Plug & Play USB Audio Management:** Effortlessly update audio files via Micro USB, recognized as a USB drive on Windows and Linux.

## Overview

The DollaTek Voice Sound Playback Module is a compact, versatile audio solution featuring a built-in 5W Class D amplifier capable of driving 4Ω speakers. It supports MP3 and WAV formats with 8MB onboard flash memory, allowing storage of up to 65,535 audio files. Control options include UART serial port, I/O triggers, and single-bus serial control, making it ideal for DIY, cosplay, and embedded audio projects. Easily update audio via Micro USB recognized as a USB drive, all within a durable 35x35x5mm form factor designed for wide temperature and humidity ranges.

## Description

Features:Support MP3 and WAV decoding format.Support sampling frequency (KHz) : 8/11.025/12/16/22.05/24/32/44.1/48.24-bit DAC output, dynamic range support 90dB, SNR support 85dB.Support 64Bbit(8Mbyte) Flash memory.Support UART serial port control voice broadcast function.It can control playback, pause, selections, turn up and down volume and other functions, the largest selection of 65535 songs.The baud rate is 9600 bit/s.Support I/O trigger function, 8bit I/O ports can trigger 8 musics or 8 I/O combinations to trigger 255 songs.Support One_line single bus serial port control, which can control playback, pause, selection, turn up and down volume and other functions.Support 3 configuration I/O for mode selection to make 7 work mode.Built in 5W Class D amplifier circuit and can directly drive 4ohm 3~5W speaker.Parameters:Work Voltage:DC 5VWorking Temperature range:-20℃~85℃Working Humidity range:0%-95%RHSize :35*35*4.5mmPackage:1 x Voice Playback Module

Review: They work great for cosplay. - I used these in a cosplay item, easy to setup by grounding each pin. Still going strong after a year of use, would definitely recommend.
Review: Works fine, a data sheet would be great! - Recognised by Win 10 PC as a USB drive by simply plugging into the Micro USB port. Comes pre-configured with 9 small MP3 files each one contains the voice of someone speaking the file number in Mandarin, simply replace these files with your own renamed ones and you are in business. The most important information relates to the 3 mode switches which change the way the playback mode is triggered, I have attached this missing information here for you. I could not find their own web site for help. It is possible to interface to Arduino as well, simple coding, again you need to search for that information. A very good value device for adding sounds, voice or alerts to your home projects. Does not come with data sheet, header pins or a USB cable, or a speaker but that keeps the cost down. UPDATE: Couple of extra points: These boards are very dependent on a good supply voltage - lower supply to 4.2V it will still function but only at lower volumes, so you will need a buck converter supply to run from a 3.7V LiPo cell. Another issue is that in stand-alone mode, triggering inputs with a solid ground (which remains grounded) produces constant repeat playback of the relevant sound file over and over. Only by removing the ground (or power) will stop the playback, these boards are not single-shot playback so it may be necessary to employ schmitt trigger circuits if you need to prevent this or use the Arduino UART mode. None of the three program switch positions have any affect on constant repeat playback, which is a shame for my application.

## Features

- This module integrates I/O subsection triggering, UART serial port control, ONE_line single bus serial port control.
- Onboard 5W Class D amplifier circuit and can directly drive 4ohm 3~5W speakers.
- It can connect the computer to update audio files via USB cable.
- 3.5mm audio interface, Micro USB download interface, button module in one module.
- Support MP3,WAV decoding format.Support 64Bbit(8Mbyte) Flash memory.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BVQKYZ5C |
| Best Sellers Rank | 17,649 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 8 in Audio Amplifier |
| Box Contents | Voice Playback Module |
| Brand | DollaTek |
| Brand Name | DollaTek |
| CPU Model | Core M Family |
| CPU model | Core M Family |
| Compatible Devices | 3.5mm Audio-enabled Devices |
| Connectivity technology | 3.5mm audio, micro USB |
| Country of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 41 Reviews |
| Item Dimensions L x W x H | 35L x 35W x 5H millimetres |
| Manufacturer | DollaTek |
| Manufacturer Part Number | CP020246 |
| Memory Storage Capacity | 8 MB |
| Memory storage capacity | 8 MB |
| Model Name | DollaTek Voice Sound Playback Module |
| Model Number | CP020246 |
| Model name | DollaTek Voice Sound Playback Module |
| Network Connectivity Technology | 3.5mm audio, micro USB |
| Operating System | Linux |
| Processor Brand | DollaTek |
| Processor Count | 1 |
| RAM Memory Installed | 0.01 GB |
| RAM Memory Technology | DDR |
| RAM memory installed size | 0.01 GB |
| Total USB Ports | 1 |
| Wireless Compability | Bluetooth |

## Product Details

- **Brand:** DollaTek
- **CPU model:** Core M Family
- **Memory storage capacity:** 8 MB
- **Model name:** DollaTek Voice Sound Playback Module
- **RAM memory installed size:** 0.01 GB

## Images

![DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card - Image 1](https://m.media-amazon.com/images/I/61DTjSVvJtL.jpg)
![DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card - Image 2](https://m.media-amazon.com/images/I/61g1MnIXBVL.jpg)
![DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card - Image 3](https://m.media-amazon.com/images/I/61F8Ze-SpvL.jpg)
![DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card - Image 4](https://m.media-amazon.com/images/I/61KZYbRvaFL.jpg)
![DollaTek Voice Sound Playback Module Arduino MP3 Player Module UART I/O Trigger Class D Amplifier Board 5W 8M Storage SD/TF Card - Image 5](https://m.media-amazon.com/images/I/61ItG2TyUyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ They work great for cosplay.
*by M***S on 3 May 2026*

I used these in a cosplay item, easy to setup by grounding each pin. Still going strong after a year of use, would definitely recommend.

### ⭐⭐⭐⭐⭐ Works fine, a data sheet would be great!
*by 4***Z on 22 March 2025*

Recognised by Win 10 PC as a USB drive by simply plugging into the Micro USB port. Comes pre-configured with 9 small MP3 files each one contains the voice of someone speaking the file number in Mandarin, simply replace these files with your own renamed ones and you are in business. The most important information relates to the 3 mode switches which change the way the playback mode is triggered, I have attached this missing information here for you. I could not find their own web site for help. It is possible to interface to Arduino as well, simple coding, again you need to search for that information. A very good value device for adding sounds, voice or alerts to your home projects. Does not come with data sheet, header pins or a USB cable, or a speaker but that keeps the cost down. UPDATE: Couple of extra points: These boards are very dependent on a good supply voltage - lower supply to 4.2V it will still function but only at lower volumes, so you will need a buck converter supply to run from a 3.7V LiPo cell. Another issue is that in stand-alone mode, triggering inputs with a solid ground (which remains grounded) produces constant repeat playback of the relevant sound file over and over. Only by removing the ground (or power) will stop the playback, these boards are not single-shot playback so it may be necessary to employ schmitt trigger circuits if you need to prevent this or use the Arduino UART mode. None of the three program switch positions have any affect on constant repeat playback, which is a shame for my application.

### ⭐⭐⭐⭐⭐ Works Great
*by E***X on 19 May 2025*

I needed an mp3 player for a project of mine and came across this. It has 4MB of flash memory, which is plenty if you use mp3 format files. The real bonus is the 3-5 watt class D amplifier. The sound from this on board unit is very good. Now, depending on how you use it, you will need to follow the details in the pdf user manual which is downloadable. You can address the board using UART serial connection, or just wire the 8 inputs to buttons. The board can be powered via USB but only if there is no connection to the RX TX connections. That is, not a PC connection, but a plug-in USB charger should be ok. A good item and good price.

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-07-03*