SIMATIC S7-300, DIGITAL INPUT SM 321 (6ES7321-1BL00-0AA0)
SIMATICS S7-300,FRONT CONNECTOR WITH SCREW CONTACTS, 40-PIN ( 6ES7392-1AM00-0AA0)
SIMATIC S7-300, ANALOG INPUT SM 331 (6ES7331-1KF02-0AB0)
Siemens SIMATIC S7-300 SM 331 Analog Current/Voltage/RTD/Thermocouple Input Module, (8) Analog Current/Voltage/RTD/Resistance Inputs; Voltage Input Ranges: +/-50mV, +/-500mV, +/-1V, 1-5V, +/-5V, 0-10V, +/-10V; Current Input Ranges: +/-20mA, 0/4 to 20mA; RTD/Resistance Input Ranges: Ni 100 Standard/Climate, Ni 1000, LG-Ni 1000 Standard/Climate, Pt 100 Standard/Climate, 0-600 Ohm, 0-6000 Ohm; Integration Time Parameterizable, 40-Pin, 13-Bit Resolution, 66 ms Module Update Time, Optically Isolated