Siemens 6AG1231-5ND32-4XB0 Analog Input Module. The recorded exact-product description states: SIPLUS S7-1200 SM 1231 4AI based on 6ES7231-5ND32-0XB0 with conformal coating, -20…+60 °C, analog input, SM 1231 , 4 AI, +/-10 V, +/-5 V, +/-2.5 V, +/-1.25 or 0-20 mA/4-20 mA, 15 bit+sign bit.
SIPLUS S7-1200 SM 1231 4AI based on 6ES7231-5ND32-0XB0 with conformal coating, -20…+60 °C, analog input, SM 1231 , 4 AI, +/-10 V, +/-5 V, +/-2.5 V, +/-1.25 or 0-20 mA/4-20 mA, 15 bit+sign bit