Key benefits Simple, reliable control: Supports two-core serial port control and AD control for flexible integration with existing systems and controllers. Fast voice updates without software: Update voice files via USB by copying files directly — no installation or additional software needed. Saves setup time and prevents compatibility headaches. Familiar playback controls: Supports previous/next, play, stop and direct song selection so you can manage audio exactly how you need. Flexible looping and scheduling: Set cycle (repeat) times to control how often tracks repeat, adapting the device to different application needs. Main functions and compatibility Control interfaces: Two-core serial port control and AD control for broad connectivity options. File updates: USB file transfer — direct copy of voice files for quick updates. Supported operating systems: Compatible with Windows XP, Windows 7, Windows 8 and Windows 10 for file transfer and management. Playback features: Previous track, next track, play, stop, and direct song selection supported. Looping: Configurable cycle times for repeated playback. Why customers choose this product Easy to integrate: Standard control methods and straightforward USB file updates reduce technical barriers and installation effort. Time-saving maintenance: Replacing or adding voice files is fast and convenient—no installers or special tools required. Versatile in use: Suitable for any application that needs reliable, repeatable audio control and simple file management. Practical use scenarios Retail or hospitality background music: Quickly update promotional messages or music playlists via USB and set repeat cycles to match store hours. Interactive exhibits and kiosks: Use serial or AD control to trigger audio clips for visitors, with direct selection of tracks and repeat settings for continuous operation. Signage, toys, or public announcement systems: Replace voice files on-site and control playback functions remotely through standard serial or AD interfaces. Trustworthy operation Designed for practical deployment with common control and update methods. Straightforward feature set focused on reliable audio management and compatibility with widely used Windows systems.