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What is IP69K - IP68 etc?
    IP69K - high pressure hose proof from multiple angles, moving angles.  
IP68 - permanent immersion in water to the manufacturer's advised depth.
IP67 - temporary immersion in water to the manufacturer's advised depth and time.

There are lesser specifications, IP65 & IP66 (rain water droplets proof) - these are still waterproof but in terms of connectors we only have IP67 or above. For enclosures we have these, and some people are happy with a box that is IP65 waterproof, most prefer IP66 or above.