The rating IPX0 is often provided to devices which do not have any rating (or do not have certification) against dust or water ingress. The 'X' indicates that there is no data available or that the device has not been tested for protection against solid objects (like dust). The '0' signifies that the device has no protection against water. Therefore, an IPX0 rating means that the device has not been evaluated for protection against solid objects and has no protection against water ingress.
