YM-500NW-S-UL Reach IP-68 waterproof Grade .The case is 100% waterproof treatment. Which made of stainless steel material.With Door status signal output has been certified by UL294 &1034 In terms of safety, durability and environmental adaptability of the product, it has been tested by the world's most stringent standards,providing architects, consulting engineers, system integrators and end users with authoritative and objective product performance and quality assurance.