The VA-6500 EVAC System is a must to respond quickly to the train management of urban railway system.

The VA-6500 EVAC System has two main roles as follow:

* Business Broadcast & BGM.

* Emergency Broadcast.

For the audio broadcasting in the tunnel, this solution hereby solves the problems that exist in the traditional interval broadcasting audio transmission over a long distance.

Technological breakthrough：

*Ultra long-distance audio transmission.  (Maximum 6Km).

*Solve the problem of speaker loop detection under strong electric field interference to

accurately detect loop faults.

Commercial value:

*The equipment is installed in the station equipment room for centralized management and easy maintenance.

*Compared with the traditional solution,  the cost is only about 1/10 of the traditional one.

Patent：

*Applied for Invention Patent and Utility Model Patent.