The following SIPLUS S7-300 Ex analog modules are available for use in extreme environmental conditions:

• SIPLUS S7-300 SM331 4 AI;
  analog input 0/4 … 20 mA
• SIPLUS S7-300 SM331 8/4 AI;
  analog input thermocouples/ PT100

SIPLUS S7-300 Ex analog modules can be used in the following extreme environmental conditions:

• Extended temperature range from -25/0 °C to +60/70 °C
• Where increased resistance to chemical, mechanical and biological loading as well as salt spray is required
• In relative humidity up to 100%