IP comes from "International Protection Marking (IEC 60529), also known as Ingress Protection Rating or IP Code. Sometimes it is also called [Waterproof Rating], [Dustproof Rating], etc. , This level defines the degree of protection that mechanical or electronic equipment can provide against the entry of solid foreign objects (including body parts such as fingers, dust, gravel, etc.), the infiltration of liquids, and accidental contact.

For example, "6" of IP67 represents the dustproof level, and "7" represents the waterproof level. Reference instructions for dustproof grades 0-6:

0 no protection

1 The tip of solid particulate objects with a diameter of 50mm or even larger or the solid MANN ZUG3 three-proof smartphone particles with a diameter of 50mm cannot penetrate completely.

2 The tip of solid particles with a diameter of 12.5mm or even larger or solid particles with a diameter of 12.5mm cannot penetrate completely.

3 The tip of solid particles with a diameter of 2.5mm or even larger or solid particles with a diameter of 2.5mm cannot penetrate completely.

4 The tip of solid particles with a diameter of 1mm or even larger or solid particles with a diameter of 1mm cannot penetrate completely.

5 Dust protection: It cannot completely prevent dust from entering, but it will not hinder the normal operation of the instrument and reduce the safety level.

6 Dust confinement: dust cannot enter the object and the entire diameter cannot exceed the gap of the outer casing

Reference instructions for waterproof grades 0-8:

0 no protection;

1 Anti-vertically falling water droplets: Vertically falling water droplets will not cause harmful effects;

2 Water droplets falling vertically when the housing is tilted up to 15°: When the housing is tilted up to no more than 15° at any angle on either side of the vertical, the water droplets falling vertically will not cause harmful effects;

3 Waterproof fog: spraying at any angle not exceeding 60° on any vertical side will not cause harmful effects;

4 Water repellent: splashing water against the shell from any direction will not cause harmful effects;

5 Water-proof: spraying water from any direction against the casing will not cause harmful effects;

6 Anti-powerful water jets: Powerful water jets from any direction against the housing will not cause harmful effects;

7 Anti-short-time immersion: Under normal temperature and pressure, when the shell is temporarily immersed in 1M deep water, it will not cause harmful effects;

8 Anti-continuous immersion: Continued immersion in water will not cause harmful effects under harsh conditions, as agreed by both the manufacturer and the user.