当无电压传感器在接触到直流48V和3安倍数时候正常断开时
从火灾报警面板到底层的升降机井都会接到反应
个人理解 我也翻得乱七八糟的
楼主自己也想想吧
英语翻译
英语翻译
one voltage free normally open sensing contact of rating 48V DC 3amps,wired from fire alarm panel to elevator shafts at ground floor
one voltage free normally open sensing contact of rating 48V DC 3amps,wired from fire alarm panel to elevator shafts at ground floor
英语人气:102 ℃时间:2019-10-29 22:08:10
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