Modul analogic I/O pentru automat programabil (PLC) SIMATIC S7-1500, SM531, 8AI, U/I/RTD/TC, 24VDC, ST, 16 biti, 8 canale in grupuri de 8, 4 canale pentru RTD, 8 analog inputs ±10 V, ±5 V, ±2.5 V, ±1 V, ±500 mV, ±250 mV, ±80 mV, ±50 mV, 1...5 V, 0/4...20 mA, ±20 mA, thermocouples type B, E, J, K, N, R, S, T, resistance thermometers Ni 100, Ni 1000, LG-Ni 1000, Pt100, Pt1000, Pt250, Pt500, resistors 0...150/300/600/6000 ohms; diagnostic, fara conector, latime 35mm, 6ES7531-1KF00-0AB0, Siemens