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UL

PDF Standards UL 121201

Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations
standard by Underwriters Laboratories, 09/15/2017

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PDF Standards UL 60947-5-2

Standard for Low-Voltage Switchgear and Controlgear – Part 5-2: Control circuit devices and switching elements – Proximity switches
standard by Underwriters Laboratories, 03/31/2022

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