Siemens 6ES7 331-7PF00-0AB0 SIMATIC S7-300 SM 331 Analog RTD/Resistance Input Module, (8) Analog RTD/Resistance Inputs, RTD Input Type: Pt 100, Pt 200, Pt 500, Pt 1000, Ni 100, Ni 120, Ni 200, Ni 500, Ni 1000, Cu 10, Standard/Climate; Resistance Input Range: 0-150 Ohm, 0-300 Ohm, 0-600 Ohm; 16-Bit Resolution (two’s complement)/24-Bit Internal Resolution (Sigma-Delta-principle), 50 ms, 40-Pin, Optically Isolated