Cloud vision Shield brand access control intercom, successfully applied in Beijing Summer Palace underground library.

Ultra-long transmission distance (up to 200 meters), low-voltage DC power supply, one to multiple points (with 8 extensions) video, no real kung fu really can't do it.

The national treasure of the Summer Palace, although we can't see you, but our products are waiting for you day and night, as the cloud vision shield people we are very proud!