Siemens S7-200，EM223,8Di / 8DO 24VDC，6ES7223-1BH22-0XA0 模块

 SIMATIC S7-200, DIGITAL I/O    

EM 223, FOR  S7-22X CPU ONLY,  

8 DI DC 24 V, SINK/SOURCE,     

8 DO DC 24V, 0.75A/POINT SOURCE