How to know the waterproof rating of the waterproof vent

The waterproof grade of the waterproof breathable membrane (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 in a short time (1m)

8: Soak in water for a long time under certain pressure

‍Dust rating of the waterproof vent (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

A scale or display instrument is marked as IP65, which means that the waterproof vent can completely prevent dust from entering and can be washed with water without any harm.