The IP protection level test is mainly for the rating test of the dustproof and waterproof performance of the product. Use the letter IP (Ingress Protection to enter the protection) plus two digits to indicate the level of equipment security protection. The IP protection level system provides a way to classify products by the dust, water and collision resistance of electrical equipment and packaging. The system has been approved by most European countries, drafted by the International Electrotechnical Commission (IEC) and published in the IED529 (BS EN 60529:1992) IP code.

IP protection levels are often expressed in terms of IP followed by two numbers, which are used to specify the level of protection.
The first digit indicates the extent to which the equipment is resistant to dust, or the extent to which people are protected from damage in a sealed environment. Represents the level of prevention of the entry of solid foreign objects, the highest level is 6;
The second digit indicates the degree to which the device is waterproof. Represents the level of water intake prevention, the highest level is 8.
Dust rating (first X)
0: no protection
1: Prevent large solid intrusion
2: Prevent medium-sized solids from invading
3: Prevent small solids from entering the intrusion
4: Prevent solid objects larger than 1mm from entering
5: Prevent harmful dust accumulation
6 : Completely prevent dust from entering
Waterproof rating (second X)
0: no protection
1 : Drops of water dripping into the casing have no effect
2: When the outer casing is tilted to 15 degrees, the water drops drip into the outer casing without affecting
3: Water or rain has no effect from the 60 degree corner to the outer casing
4: The liquid is splashed from any direction to the outer casing without damage
5: Rinse with water without any damage
6 : Can be used in the cabin environment
7 : Resistant to water (1m) in a short time
8 : Soaking water for a long time under a certain pressure
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