Night shutdown feature - Function: Automatic sound off from 21:00 to 7:30 every day. No manual action required. - Benefits: Creates a quiet overnight environment; reduces sleep disturbances from device sounds; supports a consistent sleep routine. - Why it stands out: Fixed nightly window with automatic operation for predictable quiet hours. - How it works: The system silences sound automatically during the night window and resumes normal sound afterward. - Use scenarios: 1) Master bedroom to maintain a silent sleep space. 2) Shared living areas to respect others' quiet hours. 3) Home office or study area after hours to minimize distractions for the next day. - Compatibility: Designed for devices or systems that support an automatic night shutdown feature and can configure a 21:00 to 7:30 window. - Specifications: Window: 21:00 to 7:30 daily Automatic operation: yes - Size: Not specified - Material: Not specified - Maintenance: None required