IP43 is an IEC 60529 ingress-protection rating. The first digit, 4, describes protection against solids: the enclosure keeps out solid objects 1 mm and larger, including most wires, screws, and small tools, but it does not seal against fine dust. The second digit, 3, describes protection against liquids: the device tolerates water sprayed from any direction up to 60 degrees off vertical.
In practice, IP43 LoRaWAN hardware is a good fit for protected environments rather than harsh ones:
- Indoor spaces and equipment rooms where small debris is present
- Sheltered or semi-outdoor mounting, such as under eaves or covers
- Light splashing, but not direct jets, washdown, or submersion
Enclosure rating matters when selecting a device because it determines where the unit can be deployed safely and how long it will survive. Choosing a rating that matches the real environment prevents premature failure from dust or moisture. If your sensors face dust storms, pressure washing, or flooding, step up to a sealed rating; for clean, covered installations, IP43 is often sufficient.
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Frequently asked questions
What does IP43 mean?
Under IEC 60529, the first digit 4 means the enclosure blocks solid objects 1 mm and larger, such as wires and small tools, though not fine dust. The second digit 3 means it withstands water sprayed at any angle up to 60 degrees from vertical.
Is IP43 waterproof?
No. IP43 protects against spraying water up to 60 degrees from vertical, but it is not rated for heavy jets, washdown, or immersion. It is splash-resistant, not submersible, so avoid placement where water can pool or be directed forcefully.
Is IP43 suitable for outdoor use?
It suits sheltered or semi-outdoor spots such as eaves, covered walls, or carports. For fully exposed locations with driving rain, jets, or dust ingress, choose a higher rating like IP54, IP65, or IP67.