* Support recording with micro SD card
* Support multimedia and photo frame
* Support call transfer
* Alarm clock and calendar
* Lock control
* Door monitoring function;
* Call transfer to the other monitor;
* Internal call among monitors;
* Color Contrast, Brightness adjustment;
* DO NOT DISTURB setting;
* Visitor-call transfer;
* Indoor monitor listening function;
* Broadcast function;
* Image and video captured;
* Multimedia function;
* Video door phone with DVR function;
* Auto leaving message
