<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><p><br/>Features： <br/>1. Wide voltage design: Supports 3.3-5.2VDC power supply, recommended 3.7V and above, high compatibility. <br/>2. Multiple audio format decoding: Supports MP3 and WAV formats, with a maximum sampling rate of 48KHz and excellent sound quality. <br/>3. Rich serial control functions: play, pause, adjust volume, switch EQ and other operations can be achieved through UART. <br/>4. Built in large capacity storage: onboard 32Mbits (4Mbytes) Flash, convenient for storing audio files. <br/>5. Powerful amplifier performance: Comes with a 5W Class D amplifier and direct drive 3W~5W speakers, no additional amplifier module required.</p><p>product overview：<br/>CX-SF5A is a compact serial port controlled voice playback module that supports MP3 and WAV decoding formats. 3.3-5.2VDC wide voltage power supply, direct drive 4-8 Ω horn, maximum output power 5W. Onboard 32Mbits (4Mbytes) flash storage, connected to a computer via a USB cable to replace audio files, suitable for a wide range of applications.</p><p>Parameter: <br/>1. 3.3~5.2VDC power supply, recommended to use 3.7V and above power supply <br/>2. Supports MP3 and WAV decoding formats, with a maximum audio file sampling rate of 48KHz <br/>3. Support UART asynchronous serial port control, support playback, pause, up and down songs, volume adjustment, EQ mode switching, song selection playback, specified path playback, specified path insertion and other functions <br/>4. Comes with a 5W Class D amplifier, which can directly drive 3W~5W speakers <br/>5. Comes with 32Mbits (4MByte) storage <br/>6. Can be connected to a computer via a USB cable to replace audio files</p><p>Testing procedure： <br/>1. Connect the USB-TTL module CX-340 to CX-SF5A; Connect 5V UART_TX、UART_RX、GND； TX and RX are cross connected; Connect the speaker or insert headphones; CX-340 is connected to a computer via USB. <br/>2. Open the dedicated serial port debugging tool provided by our company, set the baud rate to 9600 and send instructions for testing. Open the serial port and click the command button of the debugging tool to perform the test <br/>be careful: <br/>1) In any case, if the module is connected to the computer through a data cable, it will enter download mode and cannot be played. It must not be powered by the computer&#x27;s USB port. <br/>2) The voice module has already downloaded test voice (00001. MP3... 00009. MP3) before leaving the factory. After the test is successful, the custom voice can be copied. <br/>Replace audio file: <br/>Connect the module to the computer using a USB TypeC data cable, recognize it as a USB flash drive, and directly copy the audio files into it <br/>Note: The naming format for audio files is a 5-digit number, for example: 00001.mp3; 65535.mp3<br/><br/><br/></p></div></div><br/>