An Ingress Protection (IP) rating of a product is represented by two numbers. The first number determines the protection rating against solid objects or materials. The second number determines the protection rating against the ingress of liquid/moisture.
IP ratings and descriptions are as follows:
For example, Diode LED’s MATTONE step light has an IP rating of 65, meaning that it is tolerant against dust penetration, and its waterproof rating denotes protection against climatic conditions such as rain and snow, but cannot be immersed in water, such as a pond or swimming pool.