IP Protection Class

IP protection grade
IP (dust and water proof) grade
IP grade is based on the protection code grade of IEC (International Electrotechnical Commission) standard on preventing the entry of foreign solids and liquids This can ensure that the instrument can be used under harsh conditions
The degree of protection is usually expressed by IP followed by two numbers, which are used to specify the degree of protection

the first number: prevent physical contact and foreign substances

Protection code	Type	Description
0	--	Without protection, there is no special protection for people or objects outside
1	Large	Prevent solid objects larger than 50mm from invading
2	Medium	Prevent intrusion of solid objects larger than 12mm
3	Small	Prevent intrusion of solid objects larger than 2.5mm
4	Miniature	Prevent intrusion of solid objects larger than 1.0mm
5	Dustproof	Prevent the invasion of harmful dust (excluding the dust that produces negative images on the functionality of the instrument)
6	Sealing and dustproof	Dustproof completely prevents foreign objects from invading, and can completely prevent dust from entering

the second number: waterproof

Protection code	Type	Description
0	--	No protection
1	Waterproof I	Prevent the intrusion of water drops falling vertically
2	Waterproof II	Prevent dripping water from entering when it is vertical or even inclined by 15 degrees
3	Rainproof	It can prevent dripping water from entering when it is vertical or even inclined by 60 °
4	Splash proof	Prevent water splashing from any direction
5	Anti spray	Prevent water directly sprayed from any direction from invading
6	Waterproof	Prevent internal penetration when water is sprayed directly in any direction
7	Impermeable water	Even if the product is immersed in water under certain conditions, internal penetration will not occur
8	Underwater	Underwater operation can be carried out within specific pressure limits