Supports MP3 and WAV decoding formats. Supports sampling rates of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, and 48 KHz. Features 24-bit audio output with a dynamic range of up to 90dB and a signal-to-noise ratio of 85dB. Fully compatible with FAT16 and FAT32 file systems, supports microSD cards up to 32GB. Built-in 5W Class D power amplifier capable of directly driving 4 ohm, 3–5W speakers. UART serial interface enables control over playback, pause, track selection, volume adjustment, and other functions. Supports up to 65,535 audio files with a baud rate of 9600 bps. Supports IO trigger playback with 8 independent IO ports for triggering 8 tracks, or combined use for up to 255 tracks. Supports one-wire single-bus serial control for play, pause, track selection, and volume control. Includes 3 configurable IO pins for selecting up to 7 operating modes, with simple DIP switch settings.Product Name: DY-SV5W Voice Playback Module Model Number: DY-SV5W Operating Voltage: DC 5V Operating Temperature Range: -20°C to +85°C Operating Humidity Range: 0% to 95% RH Color: Blue Material: PCB + Metal Dimensions: 40 x 40 x 9 mm Package Contents: 1 x DY-SV5W Voice Playback Module Note: Other items not included. Lighting and display differences may cause slight color variations between the image and the actual product. Measurement error allowed within +/- 1–3 cm.