C (-40 to 167 ?. F) ELECTRO MAGNETIC COMPLIANT & SHOCK & VIBRATION RESISTANT: Industrial DIN-rail switch complies with FCC Part 15 Subpart B Class A and CE EN 55022 Class A standards and is rated for shock (IEC 60068-2-27), freefall (IEC 60068-2-32), and vibration (IEC 60068-2-6) SHOCK AND VIBRATION RESISTANT: Rated for shock (IEC 60068-2-27), freefall (IEC 60068-2-32), and vibration (IEC 60068-2-6).