What is NEMA4X?

The NEMA4X rating (from the National Electrical Manufacturers Association)
means that Unotron products are suitable for indoor and outdoor use and is protected against windblown dust, rain, splashing water, hose-directed water, and damage from external ice formation.

What is IP66?

The IP66 rating (from the International Electrotechnical Commission) means that Unotron products are protected against the ingress of dust and high pressure water jets from any direction.

In more practical terms, Unotron sealed products can be washed under running or sprayed water, as well as sprayed with disinfectants.  They can also be submerged several inches under water, but due to pressure-related issues, we do not recommend submerging our products more than several inches.