Draft Document - Alarm and electronic security systems - Part 11-5: Electronic access control systems - Open Supervised Device Protocol (OSDP) (IEC 79/617/CDV:2019); German and English version prEN IEC 60839-11-5:2019
文件草案——报警和电子安全系统——第11-5部分:电子门禁系统——开放式监控设备协议(OSDP)(IEC 79/617/CDV:2019);德文和英文版本prEN IEC 60839-11-5:2019