SIMATIC S7-200, DIGITALE E/AEM 223, NUR FUER S7-21X CPU,8 DE 24 V DC/8 DA RELAIS,SIMATIC S7-200, DIGITAL I/OEM 223, FOR S7-21X CPU ONLY,8 DI DC 24 V/ 8 DO RELAYFOR S7-21X CPU ONLY