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

• SIPLUS S7-300 SM 331;
  analog inputs
• SIPLUS S7-300 SM 332;
  analog outputs
• SIPLUS S7-300 SM 334;
  analog inputs and analog outputs

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

• Wide range of ambient temperatures from -25 °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%
• Conformity with EN 50155