How to determine the waterproof rating of the waterproof tact switch?

The waterproof tact switch is an electronic tact switch with waterproof function. The waterproof tact switch is widely used. The tact switch can be really waterproof, and needs to reach the IP67 level. 

The IP67 level is the abbreviation of the protection level of the switch industry , generally defined as the ability of an interface to protect liquid objects such as water and solid objects. The two digits behind the IP refer to the protection from large particles to dust and the protection from vertical water droplets to underwater pressure, so the larger the two digits behind the IP, the stronger the ability. 

So how do you detect the waterproof tact switch, what is the waterproof level detection method of the waterproof tact switch? 

Method 1: Under a certain pressure, it will not be damaged for a long time without deformation. 
Method 2: can be soaked in water for a short time. 
Method 3: No damage when flushing directly with water. 
Method 4: can be used in the environment inside the cabin. 
Method 5: Rainwater should not have any effect on the shell from 60 degrees or 15 degrees.
Method 6: there is no effect on the front of the water droplets dropping into the outer casing.
Method 7, all non-corrosive liquids poured on the outer casing have no effect. 

The waterproof level detection method of the waterproof tact switch is probably the above. If it can pass the above several methods, then such a waterproof tactile switch is relatively OK.

However, at the same time, everyone should pay attention to the operation principle of the waterproof tact switch, and the correct use can make it better and last longer.