The two-digit code, decoded
IP stands for Ingress Protection. The standard is IEC 60529, harmonized in the US as ANSI/IEC 60529. The first digit (0 to 6) is solids: dust, fingers, tools, where 5 is dust-protected and 6 is fully dust-tight. The second digit (0 to 9) is water: 4 handles splashing, 5 low-pressure jets, 6 powerful jets, 7 temporary submersion to one meter for 30 minutes, 8 continuous submersion, 9 high-pressure high-temperature washdowns. IP66 is dust-tight and resists powerful jets from any direction. IP67 is dust-tight and survives 30-minute submersion at one meter.
The rating describes what the lab tested, not what the camera survives in your environment. IP66 is tested against a 12.5 mm nozzle delivering 100 liters per minute at 100 kPa. The rating is a floor, not a guarantee.
Practical ratings by deployment
| Rating | Solids | Water | Where it fits |
|---|---|---|---|
| IP30 | Tools and thick wires | No protection | Indoor office, climate-controlled |
| IP54 | Limited dust | Splashing water | Indoor with light moisture |
| IP65 | Dust-protected | Low-pressure jets | Covered outdoor, light-duty |
| IP66 | Dust-tight | Powerful jets from any direction | Standard outdoor commercial |
| IP67 | Dust-tight | Submersion 1m, 30 min | Washdown, low-mounted, flood-prone |
| IP68 | Dust-tight | Continuous submersion (vendor-defined) | Marine, deep washdown |
| IP69K | Dust-tight | High-pressure high-temp washdown | Food processing, pharma |
IK ratings, the impact dimension
IK is a separate standard, IEC 62262. It rates impact resistance from IK00 (no protection) to IK10 (5-joule strike, a 1.7 kg object dropped from 30 cm). IK10 is the practical floor for cameras at risk of vandalism: parking garages, schools, transit stations, exposed public spaces. Outdoor commercial cameras commonly spec IP66 with IK10. The two ratings are independent: a camera can be dust-and-water sealed without being impact-rated.
The most common spec mistakes
- Indoor camera in a kitchen. Steam, grease, and washdown destroy IP30 housings inside 90 days. Spec IP66 or IP69K.
- Wall-mounted bullet at four feet in a parking garage. No IK10, vandalism in week three. Spec IK10 or move the mount higher.
- Pole-mounted dome in a coastal climate without corrosion treatment. Salt spray eats the screws and the gasket fails. Spec IP67 plus a corrosion-resistant housing.
- "Outdoor" camera with no temperature rating in a refrigerated warehouse. The lens fogs and the SD card fails. Spec the operating temperature range against the actual conditions.
- Mismatched power-supply rating. The camera is IP66 but the PoE injector or junction box isn't. Water gets in upstream of the camera.
What this looks like as a buy decision
Most outdoor commercial cameras ship IP66 standard, with IK10 on the dome and bullet form factors that get exposed. IP67 and IP69K models exist for washdown and submersion at a 10 to 30 percent price premium. The free consultation reviews each mounting position against the actual environment and produces a per-location spec list. We work multi-vendor with no quota on any one manufacturer.