1. Support for sound adjustment
2. Support two-zone music playback, four-zone volume adjustment
3. Bluetooth playback, you can connect your cell phone to the host to push the songs from your cell phone to the host via
Bluetooth playback
4. Timed music playback, self-timed timed boot-up songs, timed playback of specified music
5. Supports external devices to control the machine through 485; can develop its own 485 protocol to control external
devices through the host. 6. Local, TF card, USB drive, Bluetooth, play music
7. 485:Support two-way 485 control
8. SDK open, docking smart home