Safety information for applications in hazardous areas 
For applications in hazardous areas, observe the safety information in the document 
"Product Information - Use of SIWAREX modules in a Zone 2 Hazardous Area 
(http://support.automation.siemens.com/WW/llisapi.dll?aktprim=100&lang=en&referer=%2f
WW%2f&func=cslib.cssearch&nodeid0=4000024&viewreg=WW&siteid=csius&extranet=sta
ndard&groupid=4000002&objaction=cssearch&content=adsearch%2Fadsearch%2Easpx)".