1.     Full metal shell, strong and durable, can be fixed on vertical bar.

2.     Single button, call goal be set in server, realize full-duplex talkback.

3.     With built-in camera, present live scene to the control center.

4.     Built-in speaker and microphone, hands-free call and broadcast receiving.

5.     Digital recording, upload to server automatically

6.     With LED display, show 8 characters each line.

7.     With audio output port, can connect to active speaker.

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

9.     Remote software update, configuration and monitoring

10.   Works everywhere as long as Ethernet available.