Siemens S7-200，EM223,32DI 24VDC，32DO继电器，6ES7223-1PM22-0XA0 模块

 SIMATIC S7-200, DIGITAL I/O    

EM 223, FOR  S7-22X CPU ONLY,  

32 DI 24 V DC, SINK/SOURCE     

32 DO RELAY, 2A/POINT