TDS PDF

Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations (Edition 9, published September 15, 2017; revisions through April 1, 2021). Original standard UL 121201 2021-04 in PDF full version. Additional info + preview on request

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Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations (Edition 9, published September 15, 2017; revisions through July 30, 2025; ANSI reaffirmation 2025). Original standard UL 121201 2025-07 in PDF full version. Additional info + preview on request

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Guide for Use of Detectors for Flammable Gases (Edition 1, September 9, 2020). Original standard UL 121303 2020-09 in PDF full version. Additional info + preview on request

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Photographic Equipment (Edition 5, published October 29, 2007; revisions through October 15, 2019). Original standard UL 122 2019-10 in PDF full version. Additional info + preview on request

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General Requirements for Electrical Ignition Systems for Internal Combustion Engines in Class I, Division 2 or Zone 2, Hazardous (Classified) Locations (Edition 1, published August 29, 2014; revisions through February 14, 2019; ANSI reaffirmation 2019). Original standard UL 122001 2019-02 in PDF full version. Additional info + preview on request

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General Requirements for Electrical Ignition Systems for Internal Combustion Engines in Class I, Division 2 or Zone 2, Hazardous (Classified) Locations (Edition 1, published August 29, 2014; revisions through August 1, 2023). Original standard UL 122001 2023-08 in PDF full version. Additional info + preview on request

Document status: Active