1.     Plastic shell, desktop design, can be fixed on table or wall.

2.     Double call buttons, can call different goals (set in server), realize dull-duplex talkback.

3.     Built-in speaker and microphone, hands-free call and broadcasting receiving.

4.     Digital recording, upload to server automatically.

5.     With audio output interface, can connect to external speaker.

6.     Short-circuit output for connect electronic lock or alarm light, etc.

7.     Remote software update, configuration monitoring.

8.     Works everywhere as long as Ethernet is available.