1. Support video intercom and monitor with high-definition image (max 1280*720  25 fps   resolution)
2. Intelligent backlight compensation
3. Support functions of entrance guard
4. Support issuing card locally (controlled by APP)
5. The lock snapped pictures upload automatically
6. Alarm function (motion detecting, anti-withdrawal alarm)
7. Hardware noise suppression and echo cancellation, ensure the quality of voice clear and bright
8. Call forward.