P55 Protection level: The dustproof level is 5, and the waterproof level is 5 (the first number is dustproof, and the second number is waterproof).
IP5 Dustproof grade, dustproof
Meaning: The dust cannot be completely prevented from entering the device, but the amount of dust entering the device must not affect the normal operation and safety of the device.
For the protection test, the test wire with diameter of 1.0mm shall not enter the shell and maintain sufficient clearance with the live part.
IPX5 water-proof grade, water-proof
Meaning: Spraying water in all directions of the shell has no harmful effect.