1、Thinner body with fashion appearance.  Hand free calls & conversation.

2、Can have visible call to outdoor phone and control outdoor lock.  

3、Can work with outdoor phone to finish password unlocking.

4、Can monitor outdoor status with outdoor phone camera any time.

5、Use MCU board to control and makes connection stable and corrected.

6、Extension can be set with any room number. And one unit department can set more than one extension.

7、Colorful screen, ring and conversation volume can be adjusted. Extension can set no disturbing.