What exactly is an "IP Rating"?
The "IP" Rating for a light is an indication of how resistant that light is to damage by foreign objects. The two digit rating number lets the buyer know how well the light prevents solid and liquid particles from entering the housing and damaging the lights inside. The highest rating that can be attained is IP68. The numbers run from IP00 (no protection) to IP68 (completely dust tight and water tight past 3'). An average household appliance will have an IP Rating of IP22, which means it can withstand solid objects as small as a finger, and can withstand small amounts of water dripped on it, and some cell phones, such as the Galaxy S7, are rated IP68, which makes them completely dust and waterproof.
What does the IP Rating tell us?
The IP (or "Ingress Protection") rating consists of the letters "IP" followed by a two digit number. Each number corresponds to a different type of protection.
The first digit tells us how well the light protects against solid objects, such as body parts or dust particles. A higher number means the housing protects against smaller particles, and a smaller number means it will only protect against larger objects.
The second number tells us how well the light protects against liquids, such as beer or water. This number means it not only protects against water droplets, but also water jets or sprays. This number doesn't really tell you how big of a drop or spray it can protect against, only how much water and how powerful the water stream.
What is a good IP Rating?
Here at KnightStar Lights, we only have lights with an IP rating of 67 or above. This means the lights are completely dust and water tight, which makes them perfect for off road use. Lights with these ratings are completely protected against mud, dust, rain, and water sprays.
Our marine lights are IP68, which means not only do they protect against solid objects, but are completely waterproof and can be installed below the waterline on boats and docks.