Ingress Protection Rating (IPXX)
The ingress protection rating or IP rating of a device describes its protection against dust and water. This rating system is published by the International Electrotechnical Commission (IEC). The document is referred to as the IEC 60529 standard.
The IP rating for an industrial tablet PC or rugged tablet PC indicates the degree at which the device is considered a dustproof or waterproof tablet. If the rating is lower, it may be considered dust or water resistant. Once tested, the rugged tablet manufacturer will reference the environmental resistance with the IP rating.