1. Lock control
2. Silent mode
3. Make broadcast/intercom to other indoor monitors
4. Color, brightness, contrast and volume are adjustable
5. Different ring volume can be set at different time
6. Set user’s mp3 file as ring tone
7. Real-time monitoring of door station or CCTV camera
8. Support picture taking, audio and video recording.
9. Auto taking picture or record a video when be called by door station
10. Support DVR function
11. Support CVBS/AHD/TVI/CVI; Support 720P/1080PColor video camera doorbell