ETSI EN 300 220-4-2017 工作频率为25 MHz至1000 MHz的短程设备(SRD);第4部分:协调标准涵盖2014/53/EU欧盟指令第3.2条的基本要求;计量设备在指定频段169,400 MHz至169,475 MHz(V1.1.1)下运行
Short Range Devices (SRD) operating in the frequency range 25 MHz to 1 000 MHz; Part 4: Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU; Metering devices operating in designated band 169@400 MHz to 169@475 MH