Support MP3, WAV decoding . Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/44.1/48. 24-bit DAC output, dynamic range supports 90dB, signal-to-noise supports 85dB. Fully support FAT16/FAT32 file system, maximum support 32G TF card. Comes with 5W class D amplifier, which can directly drive 4 ohm, 3~5W speakers. The UART serial port controls function, which can control playback, pause, song , volume addition and subtraction, etc. The maximum of songs is 65535 songs, and the baud rate is 9600bit/s. Support IO trigger playback function, 8 IO ports individually trigger 8 tracks or 8 IO ports trigger 255 tracks in combination. Support One_line single-bus serial port control, which can control functions such as play, pause, song , volume addition and subtraction. Support 3 configuration IOs for up to 7 working modes , and the DIP switch setting is simple. Product Name:DY-SV5W Voice Playback Module Product Number:DY-SV5W Work Voltage: DC 5V Working Temperature range:-20~85 Celsuis Working Humidity range: 0%-95%RH Colour: blue Material: PCB+metal Size: 40x40x9mm Package Contents: 1 * DY-SV5W Voice Playback Module Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.