the meaning of dustproof and waterproof grade ipxx
dust rating (the first x indicates)
0 : no protection
1: prevent the intrusion of large solids
2: prevents the intrusion of medium-sized solids
3: prevent small solids from entering
4: prevent objects larger than 1mm from entering
5: prevent harmful dust accumulation
6: completely prevent dust from entering
waterproof rating (the second x indicates)
0 : no protection
1: water droplets dripping into the shell has no effect
2: when the casing is tilted to 15 degrees, water droplets dripping into the casing has no effect
3: no effect of water or rain from 60 degree corner to the shell
4: the liquid splashed on the shell from any direction has no damage effect
5: rinse with water without any harm
6: can be used in the environment in the cabin
7: can be immersed in water for a short time (1m)
8: soak in water for a long time under certain pressure