SIEMENS Simatic SM-1231AL 6ES7 231-4HF32-0XB0
SIMATIC S7-1200, Analog input, SM 1231, 8 AI, +/-10 V, +/-5 V, +/-2.5 V, or 0-20 mA/4-20 mA, 12 bit+sign or (13 bit ADC)
As per pics
Additional information
Chris
International, Scottish highlands + Islands & Ireland please check P&P with me first5