Siemens:Siemens 6ES7331-7PF01-0AB0 is a SM 331 8-channel analog input module for the SIMATIC S7-300 PLC system, designed for high-precision temperature measurement using RTD sensors (Pt100/200/1000, Ni100/120/200/500/1000, Cu10). It features 16-bit resolution, channel isolation from the backplane, and 2/3/4-wire connection options. Siemens 6ES7331-7PF01-0AB0 is a SM 331 8-channel analog input module for the SIMATIC S7-300 PLC system, designed for high-precision temperature measurement using RTD sensors (Pt100/200/1000, Ni100/120/200/500/1000, Cu10). It features 16-bit resolution, channel isolation from the backplane, and 2/3/4-wire connection options. UN 331-7PF01-0AB0