Siemens 6ES7331-7KB01-0AB0 SIMATIC S7-300 SIMATIC S7-300, ANALOG INPUT SM 331, OPTICALLY ISOLATED, 2 AI, 9/12/14 BITS RESOLUTION, U/I/THERMOCOUPLE/RESISTANCE, INTERRUPT, DIAGNOSTICS, 20 PIN, REMOVE/INSERT W. BACKPLANE BUS
