IPX9K WATERPROOF RATING: This unit has been tested and has received a waterproof rating of IPX9K. The Ingress Protection (IP) rating classifies the level of protection provided by the exterior casing and electrical enclosures against a variety of elements. Dogtra's IPX9K rating has been specifically tested for waterproof protection. This unit was tested at close range using powerful water jets with high pressure and high temperature over various points.