Siemens 6ES7531-7PF00-0AB0SIMATIC S7 1500 analog input module AI 8xU R RTD TC HF, 16 bit resolution, up to 21 bit Resolution at RT and TC, accuracy 0. 1%, 8 channels in groups of 1; common mode voltage: 30 V AC 60 V DC, Diagnostics; Hardware interrupts Scalable temperature measuring range, thermocouple type C, Calibrate in RUN; Delivery including infeed element, shield bracket and shield terminal: Front connector (screw terminals or push in) to be ordered separately