100% brand new and high quality Features: Support IO control trigger and play over 255 songs,while UART control trigger can play up to 65535 songs. OneLine single main-line control trigger play,onboard D series 5W power amplifier access directly to 4-8Ohm horn. Onboard 32M-bit(4MBytes) flash storage audio files,USB copy audio files directly,specified songs play,board thickness is 0.8mm,and stamp hole can paster welding,compatible with 2.54mm pin header. 133/5000 Integrated IO segment trigger, UART serial control, ONE_line single bus serial control, standard MP3 and other 7 working modes; Onboard 5 w class D power amplifier, can direct drive 4 , 3 ~ 5 w speakers; 1.Support MP3,WAV decoding format, onboard 32Mbit (4MByte) flash audio file storage, can be connected to the computer through USB data cable to update the audio file. 2.Support ampling rate(KHz): 8/11.025/12/16/22.05/24/32/44.1/48. 3.24bits DAC output,dynamic range supports 90dB,SNR supports 85dB. 4.Onboard 32Mbit(4Mbyte)flash storage,connecting with computer to update audio files by USB. 5.Equipped with 5W D type power amplifying,directly drive to 4 Ohm,3-5 horn. 6.UART serial port control audio playing functions,control playing,pause,select,up or down volume,etc.Maximum with 65535 songs,Baud rate 9600 bps. 7.Support 3 IO port control,available to choose 7 working modes. module only,other accessories demo in the picture are not included Notice: "Key combination playback" refers to the restoration of the original high level after io0-io7 output the corresponding level, similar to the key trigger once. "Level combination playback" refers to the io0-io7 output of the corresponding level to maintain the same level. The difference between "I/O combination (independent) mode 0" and "I/O combination (independent) mode 1" is that the former mode continues to play the current track until the end after releasing the level, while the latter mode immediately stops playing the track after releasing the level. Specification: Type: Audio Play Model: DY-SV17F Size: One Size 2.3x2.6cm(0.91x1.02in) Quantity: 1 Pc Note: 1.1cm = 0.39inch.. 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Module