The SIPLUS S7-1200 SM 1231 8AI (model number: 6AG1231-4HF32-4XB0) is an analog input module manufactured by Siemens, designed for the S7-1200 series controllers. This module is built upon the base model 6ES7231-4HF32-0XB0 and is protected with a conformal coating for reliable operation in extreme environmental conditions. It can operate stably within a temperature range of -20°C to +60°C. The module features 8 analog input channels that can accept signals in voltage ranges of +/-10 V, +/-5 V, +/-2.5 V, or current ranges of 0-20 mA / 4-20 mA. Analog-to-digital conversion is performed with 12-bit resolution plus a sign bit, providing an overall 13-bit Analog-to-Digital Converter (ADC) accuracy. This module is ideal for high-precision measurement and control of temperature, pressure, or other physical quantities in industrial automation. The module has a net weight of 0.212 kg and packaging dimensions of 8.80 x 10.30 x 5.80 cm.\n