787-7967, Siemens, Siemens SM 1223 Series PLC I/O Module for Use with SIMATIC S7-1200 Series, Digital, Digital, 24 V, Brand Siemens, Accessory Type PLC I/O Module Siemens SM 1223 Series PLC I/O Module for Use with SIMATIC S7-1200 Series, Digital, Digital, 24 V