I am working on a product that need to satisfy Class I, Div2. What is Class I, Div 2? Do you have idea how I can get my product hardware Class I, Div 2 approved?
First of all looking into NFPA and NEC codes and regulations. Next determine if you need to make the device IS, or explosion proof, then start the process of a UL certification. Also pursue a FM or even a European listed(approved) device (more widely accepted) for this category of product.