Siemens 6ES7331-1KF02-0AB0 is an isolated 8-channel analog input module (SM 331) for the SIMATIC S7-300, delivering 13-bit resolution and galvanic isolation for safe sensor interfacing. It supports U/I, resistance, Pt100, NI100, NI1000, LG-NI1000, and PTC/KTY sensor types, enabling measurement of voltages, currents, RTDs, and resistive sensors across eight channels. The module uses a 40-pole backplane connection and offers a 66 ms conversion time, making it suitable for multi-channel data acquisition in industrial automation projects.
