SIMATIC S7-1500 Analog input/output module AI 4x U/I/R/RTD/TC ST; 4 channels in groups of 4; Hardware interrupts; Diagnostics AQ 2x U/I ST; 2 channels in groups of 2; Substitute value; Diagnostics Common mode voltage approx. 10 V 16 bit; Accuracy 0.3%; Delivery including push-in front connector, infeed element, shield bracket and shield terminal.