SIMATIC S7, DIGITAOUTPUTL SM 322, OPTICALLY ISOLATED, 4 DO, 15V / 20MA, 1 X 20 PIN, FOR SIGNALS FROM HAZARDOUSAREAS CAPABLE OF DIAGNOST.,PTB-TESTED
SM322, 4DO, 15V DC,20MA, HAZARDOUS AREAS (6ES7322-5RD00-0AB0)