SM322 EXTEND MODULE (6ES73221HH010AA0) SIMATIC S7-300, DIGITAL OUTPUT SM 322, OPTICALLY ISOLATED 16DO, RELAY CONTACTS, 1 X 20 PIN AND SIMATIC S7-300, FRONT CONNECTOR(6ES73921CJ000AA0) FOR SIGNAL MODULES FASTCONNECT, (INSUL. PIERC. CLAMPS), 20-PIN