The IP protection level of the metal switch is composed of two numbers. The first number represents the level of the electrical appliance against dust and foreign objects intrusion. The second number represents the degree of air tightness of the electrical appliance against moisture and waterproof immersion. The larger the number, the higher the protection level.

Dust-proof rating

The number represents the level and definition of protection  
0 No protection No special protection  
1 Avoid the intrusion of objects larger than 50mm. Avoid the intrusion of objects larger than 50mm in diameter because the human body accidentally touches the internal parts of the lamp  
2 Avoid the intrusion of objects larger than 12mm avoid fingers touching the internal parts of the lamp  
3 Avoid all intrusion of things larger than 2.5mm avoid intrusion of things, wires or objects with diameters larger than 2.5mm  
4 Avoid the intrusion of objects larger than 1.0mm Avoid the intrusion of mosquitoes, flies, insects or objects with a diameter larger than 1.0mm  
5 Dust prevention cannot completely avoid dust invasion, but the amount of dust invasion will not affect the normal operation of the electrical  
6 Dust prevention Thoroughly avoid dust invasion

Waterproof rating:

The number represents the level and definition of protection  
0 No protection, No special protection  
1 Avoid water intrusion, avoid straight drops of water  
2 When the lamp is tilted 15 degrees, it can still avoid dripping water  
3 Avoid the intrusion of erupting water, Avoid rain water or straight into the direction of the eruption Angle less than 50 degrees  
4 Avoid splashing water to avoid splashing water from all directions  
5 Avoid water intrusion by large waves Avoid water intrusion by large waves or water spewing rapidly from the blowhole  
6 Avoid water intrusion by big waves. Under certain water pressure, the lamps can still operate normally  
7 Avoid water intrusion into the lamps under the condition of certain water pressure, and ensure the normal operation of lamps  
8 Avoid the effects of flooding

If the waterproof level of the metal button switch is IP67, it means that the metal button switch is dust-proof and waterproof, completely avoiding the intrusion of dust and water intrusion, so that the metal switch can be submerged in water indefinitely under certain water pressure conditions. It can still operate normally.