Chapter 3. InstallationGFK-2737F December 2016 293.2 Installation in Hazardous AreasEQUIPMENT LABELED WITH REFERENCE TO CLASS I, GROUPS A, B, C & D, DIV. 2 HAZARDOUS LOCATIONS ISSUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS A, B, C, D OR NON-HAZARDOUS LOCATIONS ONLY.WarningEXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FORCLASS I, DIVISION 2.WarningEXPLOSION HAZARD - WHEN IN HAZARDOUS LOCATIONS, TURN OFF POWER BEFOREREPLACING OR WIRING MODULES.WarningEXPLOSION HAZARD - DO NOT CONNECT OR DISCONNECT EQUIPMENT UNLESS POWERHAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.WarningEXPLOSION HAZARD - USB PORT IS ONLY FOR USE IN NON-HAZARDOUS LOCATIONS, DONOT USE UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS.3.2.1 ATEX MarkingII 3 G Ex nA IIC T5 X Ta: 0 - 60C