【MP3 Playback Kit】This is a voice recording module, MP3 music playback, small size, light weight, simple operation; can be connected to the human body infrared sensor module 【Use】5 buttons to control music play/pause, adjust volume. With loop, jog play, single-pass playback 【Features】SPI Flash and TF used to store MP3 songs, both choose one, when the same time, TF card playback priority. Sound recording board built-in storage space of 4MB, and supports up to 8GB TF card. With 3W external amplifier 【Application】Audio will be played whenever the human body sensing is triggered. Suitable for public places such as shops, safety experience halls, construction sites, shopping malls, elevators, banks, ATM teller machines, display areas, etc 【Note】: The songs or record format must be MP3. If the song is more than 4MB, you need copy the MP3 songs to TF card, then insert the TF card into the card slot of the board /