限制人员的进出区域,拒绝不速之客,保护公共财产不受非法侵犯.如果请求进入的人员身份合法即经过控制中心授权,电锁将打开否则电锁不会开启并报警。(Restrict the entry and exit of the personnel, refuse uninvited guests, protect public property from illegal infringement. If the person requested to enter the identity is authorized by the control center, the lock will open or the lock will not be opened and alarm.)