Sound Recorder Module Voice MP3 WAV Music Player with Loudspeaker Button Control 8M RAM Capacity DIY Music Box for Greeting Card _x000D_ _x000D_ Product selling point: 1. Download the file to adjust the volume, the larger the value, the louder the volume 2.Micro USB interface, can charge the battery directly when connected to the lithium battery 3. The memory capacity of the greeting card module is 8M, and the button type/light sensor type are optional 4. Super power-saving module, standby power consumption is 0 5. The playback mode can be set freely Brief description of the function: 1. The module has its own internal memory, 8M is optional, and it has its own USB interface, which can be directly displayed on the USB disk when plugged into the computer. You can freely delete and replace any MP3 audio files. 2. External buttons can be connected to control the playback through the buttons, and the playback mode can be set freely, looping or not. 3. It can be connected with an external photoresistor, play when there is light, stop when there is no light, and freely set loop or no loop. 4. Power supply voltage: DC3.4-5V, can be connected to lithium battery or dry battery. 5. Ultra-low power consumption design, when not working, the standby power consumption is "0". Interface Description: 1. USB: Connect the computer to download mp3 audio files through the Micro USB data cable. When connected to the lithium battery, the battery can be charged directly; 2. Charging indicator light: the indicator light is always on during the charging process, and the full light is off; 3. Play indicator light: it is always on during the process of playing voice; 4. Support downloading multiple voice files, and play the next voice every time it is triggered; _x000D_ _x000D_ _x000D_