System function characteristic:
2.1.1 management center machine
We call households, and households.
The monitoring of each unit door
I open the door unit
2.1.2 unit door host
You can call the extension, and household video intercom
You can password lock, ID\IC card lock
You can call management center, and video calls
2.1.3 indoor extension
The call center management machine
The monitoring unit door
The host video calls, unlock
The tenants and tenants can call each other, call