DY-SV5W is an intelligent voice playback module. It supports I/O trigger control, UART serial port control, and single-wire (1-Wire) serial port control. Onboard 5W Class D amplifier circuit can directly drive 4Ω, 3–5W speakers. Supports MP3 and WAV audio decoding formats. Maximum supported storage: 32GB microSD card (FAT16/FAT32), and 32GB USB flash drive. Audio files can be updated via USB connection to a computer. Includes 3.5mm audio input/output interface, USB flash drive interface, Micro-USB programming interface, and onboard push-button module. Color: Blue Material: PCB Features: 1. Supports MP3 and WAV decoding. 2. Supports sampling rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, and 48 kHz. 3. 24-bit audio output; dynamic range: up to 90 dB; SNR: up to 85 dB. 4. Compatible with FAT16 and FAT32 file systems; supports up to 32GB microSD cards and 32GB USB drives. 5. UART serial control enables playback, pause, track selection, volume adjustment, and more. Supports up to 65,535 tracks. Default baud rate: 9600 bps. 6. I/O trigger function: 8-bit I/O ports support triggering up to 8 tracks or 255 tracks via I/O combinations. 7. Single-wire (1-Wire) serial control supports playback, pause, track selection, and volume control. 8. Three configurable I/O pins enable seven operating modes. 9. Integrated 5W Class D amplifier; compatible with 4Ω, 3–5W speakers. Specifications: 1. Product Name: DY-SV5W Voice Playback Module 2. Model Number: DY-SV5W 3. Operating Voltage: DC 5V Note: Appearance, color, and labeling may vary slightly between production batches. This does not affect functionality. Package Includes: 1 × DY-SV5W Module