Why set up a sentry box? What's the use?

The application scope of sentry box is quite extensive, including property, expressway, building, square, security duty, entrance and exit, staff canteen of public institutions, parks, stadiums, hospitals, station waiting rooms, streets, municipal administration, armed police duty, traffic police command, road toll collection, parking lot entrance and exit, stadium entrance and exit, toll collection office, wharf, community, hotel, public security post engineering and public security post.

For details, please consult Shanghai Xiangda Building Decoration Engineering Co., Ltd.