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, 8 analog inputs ±1 V, ±10 V, ±5 V, ±50 mV, ±500 mV, 1...5 V, 0/4...20 mA, ±20 mA, resistance thermometers Ni 100, Ni 1000, LG-Ni 1000, Pt100, Pt1000, resistors 0...600/6000 ohms, PTC; diagnostic, fara conector, latime 35mm, 6ES7531-7QF00-0AB0, Siemens