门禁必须配服务器吗?3种情况教你省钱又安全,门禁系统是否需要服务器?三种经济安全方案解析
Must access control systems be equipped with servers? Three situations to help you save money and stay safe: Does an access control system need a server? Analysis of Three Economic Security Schemes
以上为机器翻译结果，长、整句建议使用 人工翻译 。