Switching Card/Modules. The general classification of relay cards. May be subdivided into: independent switch cards (1 input to 1 output), scanner or multiplex cards (1:N, N:1) and matrix cards (M:N).

 
  • 开关卡/模块继电器卡的一般分类。可细分为:独立开关卡(1路输入至1路输出)、扫描或复用卡(1:N、N:1)和矩阵卡(M:N)。
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