DY-SV5W is an intelligent voice module that integrates I/O trigger, UART serial port control, and one-line single bus serial port control. It features a built-in 5W Class D amplifier circuit and can directly drive a 4ohm 3~5W speaker. Supports MP3 and WAV audio decoding formats. Maximum support for 32GB TF card memory; audio files can be updated by connecting to a computer via USB cable. Includes 3.5mm audio interface, U disk interface, Micro-USB download interface, and button module in one unit. Supports sampling frequencies of 8/11.025/12/16/22.05/24/32/44.1/48 KHz. Features 24-bit DAC output with a dynamic range of up to 90dB and SNR up to 85dB. Compatible with FAT16 and FAT32 file systems. Supports up to 32GB TF card and 32GB U-disk. Supports UART serial port control for voice broadcast functions, including playback, pause, track selection, volume adjustment, and more. Can support up to 65,535 songs. Default baud rate is 9600 bps. Supports I/O trigger function with 8-bit I/O ports, allowing up to 8 individual triggers or combinations to select up to 255 songs. Supports one-line single bus serial control for playback, pause, track selection, and volume control. Features 3 configurable I/O pins for mode selection, enabling 7 different operating modes. Built-in 5W Class D amplifier drives 4ohm, 3–5W speakers directly. Product Name: DY-SV5W Voice Playback Module Model Number: DY-SV5W Operating Voltage: DC 5V Color: Blue Material: PCB Included Memory Card: 1GB Package Includes: 1 x Module 1 x Memory Card Note: The appearance, color, and labeling of the product may vary slightly between batches, but this does not affect functionality. Lighting and display settings may cause slight color differences between the image and the actual item. Measurement error allowed within +/- 1–3 cm.