DYHV20T is an intelligent voice playback module with multiple control options and builtin amplification. It is designed to provide reliable audio playback in compact embedded applications. Key features and benefits Multiple control interfaces include builtin IO segment trigger, UART serial port control, and ONEline bus serial port control, with simple dip switch settings for easy configuration Builtin 20W class D power amplifier for integrated audio playback Supports standard MP3 decoding and seven additional operating modes, enabling flexible use in different scenarios MP3 and WAV decoding formats are supported, with storage on a TF card up to 32 GB USB connectivity allows updating audio files stored on the TF card by connecting a computer via a USB data cable audio performance with 24bit output Wide sampling rate support from 8 to 48 kHz, covering common audio formats and recording quality Dynamic range up to 90 dB and signaltonoise ratio up to 85 dB, ensuring clear playback in varied environments Storage, formats and compatibility Decoding formats: MP3 and WAV Storage interface: TF card up to 32 GB Update method: USB data cable connection to a computer for updating TF storage audio files Control compatibility: IO segment trigger, UART, and ONEline bus serial control Technical specifications at a glance Sampling rate (kHz): 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48 Output: 24bit Dynamic range: 90 dB SNR: 85 dB Amplifier: builtin 20 W class D power amplifier Practical use scenarios Information kiosk or selfservice terminal: use IO triggers or serial control to play prompted announcements or instructions automatically in response to user actions Retail display or hospitality signage: deliver voice messages or alerts tied to events or timers, controlled via UART or IO inputs DIY projects and smart devices: integrate reliable MP3/WAV playback with an embedded amplifier for toys, home automation devices, or embedded audio dashboards Notes on usage The module combines control flexibility with straightforward configuration via dip switches, while offering reliable MP3/WAV playback and a builtin amplifier for compact installations Supports USBbased audio file updates to the TF storage for easy content management without additional external hardware